CWE-77
Allowed-with-ReviewImproper Neutralization of Special Elements used in a Command ('Command Injection')
Abstraction: Class · Status: Draft
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
5839 vulnerabilities reference this CWE, most recent first.
GHSA-VHQV-99HP-GX94
Vulnerability from github – Published: 2025-09-13 00:30 – Updated: 2025-09-13 00:30A security vulnerability has been detected in MiczFlor RPi-Jukebox-RFID up to 2.8.0. Affected by this issue is some unknown functionality of the file /htdocs/api/playlist/playsinglefile.php. The manipulation of the argument File leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-10328"
],
"database_specific": {
"cwe_ids": [
"CWE-77",
"CWE-78"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-12T22:15:33Z",
"severity": "MODERATE"
},
"details": "A security vulnerability has been detected in MiczFlor RPi-Jukebox-RFID up to 2.8.0. Affected by this issue is some unknown functionality of the file /htdocs/api/playlist/playsinglefile.php. The manipulation of the argument File leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-vhqv-99hp-gx94",
"modified": "2025-09-13T00:30:34Z",
"published": "2025-09-13T00:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10328"
},
{
"type": "WEB",
"url": "https://github.com/YZS17/CVE/blob/main/RPi-Jukebox-RFID/rce5.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.323754"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.323754"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.643512"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-VHR4-982G-H2PJ
Vulnerability from github – Published: 2022-05-17 03:14 – Updated: 2022-05-17 03:14The server in IBM Tivoli Storage Manager FastBack 6.1 before 6.1.12 allows remote attackers to execute arbitrary commands with SYSTEM privileges via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2015-1949"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-06-30T15:59:00Z",
"severity": "HIGH"
},
"details": "The server in IBM Tivoli Storage Manager FastBack 6.1 before 6.1.12 allows remote attackers to execute arbitrary commands with SYSTEM privileges via unspecified vectors.",
"id": "GHSA-vhr4-982g-h2pj",
"modified": "2022-05-17T03:14:54Z",
"published": "2022-05-17T03:14:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-1949"
},
{
"type": "WEB",
"url": "http://www-01.ibm.com/support/docview.wss?uid=swg21959398"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/75459"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1032773"
},
{
"type": "WEB",
"url": "http://www.zerodayinitiative.com/advisories/ZDI-15-271"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VJ8F-J434-7C8H
Vulnerability from github – Published: 2022-05-24 19:18 – Updated: 2022-10-13 12:00An issue was discovered in Nagios XI 5.8.5. In the Manage Dashlets section of the Admin panel, an administrator can upload ZIP files. A command injection (within the name of the first file in the archive) allows an attacker to execute system commands.
{
"affected": [],
"aliases": [
"CVE-2021-40345"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-26T11:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Nagios XI 5.8.5. In the Manage Dashlets section of the Admin panel, an administrator can upload ZIP files. A command injection (within the name of the first file in the archive) allows an attacker to execute system commands.",
"id": "GHSA-vj8f-j434-7c8h",
"modified": "2022-10-13T12:00:29Z",
"published": "2022-05-24T19:18:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40345"
},
{
"type": "WEB",
"url": "https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT"
},
{
"type": "WEB",
"url": "https://github.com/ArianeBlow/NagiosXI-EmersonFI/blob/main/README.md"
},
{
"type": "WEB",
"url": "https://synacktiv.com"
},
{
"type": "WEB",
"url": "https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VJFR-P6HP-JQQW
Vulnerability from github – Published: 2020-08-31 23:00 – Updated: 2021-09-23 21:01Versions of ungit prior to 0.9.0 are affected by a command injection vulnerability in the url parameter.
Recommendation
Update version 0.9.0 or later.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.8.4"
},
"package": {
"ecosystem": "npm",
"name": "ungit"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2015-4130"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:08:53Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "Versions of `ungit` prior to 0.9.0 are affected by a command injection vulnerability in the `url` parameter.\n\n\n## Recommendation\n\nUpdate version 0.9.0 or later.",
"id": "GHSA-vjfr-p6hp-jqqw",
"modified": "2021-09-23T21:01:14Z",
"published": "2020-08-31T23:00:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-4130"
},
{
"type": "WEB",
"url": "https://github.com/FredrikNoren/ungit/issues/486"
},
{
"type": "PACKAGE",
"url": "https://github.com/FredrikNoren/ungit"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/40"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Command Injection in ungit"
}
GHSA-VJGW-3FFM-C33H
Vulnerability from github – Published: 2024-12-03 21:31 – Updated: 2024-12-05 21:31An issue in Beijing Digital China Yunke Information Technology Co.Ltd v.7.2.6.120 allows a remote attacker to execute arbitrary code via the code/function/dpi/web_auth/customizable.php file
{
"affected": [],
"aliases": [
"CVE-2024-51114"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-03T20:15:15Z",
"severity": "HIGH"
},
"details": "An issue in Beijing Digital China Yunke Information Technology Co.Ltd v.7.2.6.120 allows a remote attacker to execute arbitrary code via the code/function/dpi/web_auth/customizable.php file",
"id": "GHSA-vjgw-3ffm-c33h",
"modified": "2024-12-05T21:31:52Z",
"published": "2024-12-03T21:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-51114"
},
{
"type": "WEB",
"url": "https://github.com/ZackSecurity/VulnerReport/blob/cve/DCN/2.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VJHC-HV8M-W466
Vulnerability from github – Published: 2022-02-09 00:00 – Updated: 2022-02-09 00:00Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a command injection vulnerability in the function formSetPppoeServer. This vulnerability allows attackers to execute arbitrary commands via the pppoeServerIP, pppoeServerStartIP, and pppoeServerEndIP parameters.
{
"affected": [],
"aliases": [
"CVE-2022-24171"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-04T02:15:00Z",
"severity": "CRITICAL"
},
"details": "Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a command injection vulnerability in the function formSetPppoeServer. This vulnerability allows attackers to execute arbitrary commands via the pppoeServerIP, pppoeServerStartIP, and pppoeServerEndIP parameters.",
"id": "GHSA-vjhc-hv8m-w466",
"modified": "2022-02-09T00:00:39Z",
"published": "2022-02-09T00:00:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24171"
},
{
"type": "WEB",
"url": "https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_35/35.md"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VJPQ-XWHG-4JR4
Vulnerability from github – Published: 2022-05-13 01:37 – Updated: 2022-05-13 01:37A vulnerability in certain system script files that are installed at boot time on Cisco Application Policy Infrastructure Controllers could allow an authenticated, local attacker to gain elevated privileges and execute arbitrary commands with root privileges on an affected host operating system. The vulnerability is due to insufficient validation of user-controlled input that is supplied to certain script files of an affected system. An attacker could exploit this vulnerability by submitting crafted input to a script file on an affected system. A successful exploit could allow the attacker to gain elevated privileges and execute arbitrary commands with root privileges on the affected system. To exploit this vulnerability, the attacker would need to authenticate to the affected system by using valid administrator credentials. Cisco Bug IDs: CSCvf57274.
{
"affected": [],
"aliases": [
"CVE-2017-12352"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-11-30T09:29:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in certain system script files that are installed at boot time on Cisco Application Policy Infrastructure Controllers could allow an authenticated, local attacker to gain elevated privileges and execute arbitrary commands with root privileges on an affected host operating system. The vulnerability is due to insufficient validation of user-controlled input that is supplied to certain script files of an affected system. An attacker could exploit this vulnerability by submitting crafted input to a script file on an affected system. A successful exploit could allow the attacker to gain elevated privileges and execute arbitrary commands with root privileges on the affected system. To exploit this vulnerability, the attacker would need to authenticate to the affected system by using valid administrator credentials. Cisco Bug IDs: CSCvf57274.",
"id": "GHSA-vjpq-xwhg-4jr4",
"modified": "2022-05-13T01:37:49Z",
"published": "2022-05-13T01:37:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12352"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-apic"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/101993"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039925"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VJR9-VRJV-2G4H
Vulnerability from github – Published: 2025-03-17 18:31 – Updated: 2025-03-17 18:31Dell SmartFabric OS10 Software, version(s) 10.5.4.x, 10.5.5.x, 10.5.6.x, 10.6.0.x, contain(s) an Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Code execution.
{
"affected": [],
"aliases": [
"CVE-2025-22473"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-17T18:15:21Z",
"severity": "HIGH"
},
"details": "Dell SmartFabric OS10 Software, version(s) 10.5.4.x, 10.5.5.x, 10.5.6.x, 10.6.0.x, contain(s) an Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027) vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Code execution.",
"id": "GHSA-vjr9-vrjv-2g4h",
"modified": "2025-03-17T18:31:53Z",
"published": "2025-03-17T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22473"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000289970/dsa-2025-070-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000293638/dsa-2025-069-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000294091/dsa-2025-079-security-update-for-dell-networking-os10-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000295014/dsa-2025-068-security-update-for-dell-networking-os10-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VJV4-2HJH-G5HP
Vulnerability from github – Published: 2025-11-23 18:30 – Updated: 2025-11-23 18:30A vulnerability was identified in D-Link DIR-852 1.00. This issue affects some unknown processing of the file /gena.cgi. Such manipulation of the argument service leads to command injection. The attack can be executed remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.
{
"affected": [],
"aliases": [
"CVE-2025-13562"
],
"database_specific": {
"cwe_ids": [
"CWE-74",
"CWE-77"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-23T18:15:54Z",
"severity": "MODERATE"
},
"details": "A vulnerability was identified in D-Link DIR-852 1.00. This issue affects some unknown processing of the file /gena.cgi. Such manipulation of the argument service leads to command injection. The attack can be executed remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-vjv4-2hjh-g5hp",
"modified": "2025-11-23T18:30:27Z",
"published": "2025-11-23T18:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13562"
},
{
"type": "WEB",
"url": "https://github.com/YZS17/CVE/blob/main/DLink/DLink-DIR852/RCE2.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.333327"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.333327"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.697063"
},
{
"type": "WEB",
"url": "https://www.dlink.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-VM28-MRM7-FPJQ
Vulnerability from github – Published: 2017-10-24 18:33 – Updated: 2025-04-13 23:28lib/sfpagent/bsig.rb in the sfpagent gem before 0.4.15 for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in the module name in a JSON request.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "sfpagent"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.15"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2014-2888"
],
"database_specific": {
"cwe_ids": [
"CWE-77"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:57:58Z",
"nvd_published_at": "2014-04-23T15:55:00Z",
"severity": "HIGH"
},
"details": "`lib/sfpagent/bsig.rb` in the sfpagent gem before 0.4.15 for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in the module name in a JSON request.",
"id": "GHSA-vm28-mrm7-fpjq",
"modified": "2025-04-13T23:28:09Z",
"published": "2017-10-24T18:33:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-2888"
},
{
"type": "PACKAGE",
"url": "https://github.com/herry13/sfpagent"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sfpagent/CVE-2014-2888.yml"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20201029141944/http://www.vapid.dhs.org/advisories/spfagent-remotecmd.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2014/Apr/243"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2014/04/16/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2014/04/18/4"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "sfpagent Command Injection vulnerability"
}
Mitigation
If at all possible, use library calls rather than external processes to recreate the desired functionality.
Mitigation
If possible, ensure that all external commands called from the program are statically created.
Mitigation MIT-5
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation
Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.
Mitigation
Assign permissions that prevent the user from accessing/opening privileged files.
CAPEC-136: LDAP Injection
An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value.
CAPEC-15: Command Delimiters
An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
CAPEC-183: IMAP/SMTP Command Injection
An adversary exploits weaknesses in input validation on web-mail servers to execute commands on the IMAP/SMTP server. Web-mail servers often sit between the Internet and the IMAP or SMTP mail server. User requests are received by the web-mail servers which then query the back-end mail server for the requested information and return this response to the user. In an IMAP/SMTP command injection attack, mail-server commands are embedded in parts of the request sent to the web-mail server. If the web-mail server fails to adequately sanitize these requests, these commands are then sent to the back-end mail server when it is queried by the web-mail server, where the commands are then executed. This attack can be especially dangerous since administrators may assume that the back-end server is protected against direct Internet access and therefore may not secure it adequately against the execution of malicious commands.
CAPEC-248: Command Injection
An adversary looking to execute a command of their choosing, injects new items into an existing command thus modifying interpretation away from what was intended. Commands in this context are often standalone strings that are interpreted by a downstream component and cause specific responses. This type of attack is possible when untrusted values are used to build these command strings. Weaknesses in input validation or command construction can enable the attack and lead to successful exploitation.
CAPEC-40: Manipulating Writeable Terminal Devices
This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded.
CAPEC-43: Exploiting Multiple Input Interpretation Layers
An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: <parser1> --> <input validator> --> <parser2>. In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
CAPEC-75: Manipulating Writeable Configuration Files
Generally these are manually edited files that are not in the preview of the system administrators, any ability on the attackers' behalf to modify these files, for example in a CVS repository, gives unauthorized access directly to the application, the same as authorized users.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.