Common Weakness Enumeration

CWE-73

Allowed

External Control of File Name or Path

Abstraction: Base · Status: Draft

The product allows user input to control or influence paths or file names that are used in filesystem operations.

1232 vulnerabilities reference this CWE, most recent first.

CVE-2026-103591 (GCVE-0-2026-103591)

Vulnerability from cvelistv5 – Published: 2026-09-30 23:02 – Updated: 2026-09-30 23:02
VLAI
Title
DeepWiki-Open through commit d92819a Unauthenticated Arbitrary File Read via /codemap/file
Summary
DeepWiki-Open through commit d92819a contains an unauthenticated arbitrary file read vulnerability in the GET /codemap/file endpoint via the repo_url parameter. Attackers can supply a non-URL repo_url value to bypass path containment checks and read any file accessible to the API process by specifying absolute file paths.
CWE
  • CWE-73 - External Control of File Name or Path
Impacted products
Vendor Product Version
AsyncFuncAI deepwiki-open Affected: 0 , ≤ d92819a (git)
Create a notification for this product.
Date Public
2026-09-20 00:00
Show details on NVD website

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CVE-2026-103398 (GCVE-0-2026-103398)

Vulnerability from cvelistv5 – Published: 2026-09-30 14:48 – Updated: 2026-10-01 14:50
VLAI
Title
OpenSave through 2.4.0 Arbitrary File Read and Write via Peer-Controlled Save Path
Summary
OpenSave through 2.4.0 fails to properly validate save paths supplied by paired peers in the manifest request handler. Attackers can specify arbitrary directories outside configured save locations to read and write files through manifest and sync routes.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:37 UTC
CWE
  • CWE-73 - External Control of File Name or Path
Impacted products
Vendor Product Version
Liquid-co OpenSave Affected: 0 , ≤ 2.4.0 (semver)
Create a notification for this product.
Date Public
2026-09-09 00:00
Show details on NVD website

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CVE-2026-103255 (GCVE-0-2026-103255)

Vulnerability from cvelistv5 – Published: 2026-10-01 10:42 – Updated: 2026-10-01 19:25
VLAI
Title
n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal and Query Injection via Supabase
Summary
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a path traversal vulnerability in the Supabase node where the tableId parameter is inserted into request paths without validation. Attackers can exploit workflows binding tableId to untrusted input to traverse to Auth and Storage APIs using the administrative serviceRole key, bypassing Row Level Security and enabling unauthorized data access and modification.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 19:25 UTC
CWE
  • CWE-73 - External Control of File Name or Path
References
Impacted products
Vendor Product Version
n8n-io n8n Affected: 0 , < 1.123.80 (semver)
Affected: 2.0.0 , < 2.39.6 (semver)
Affected: 2.40.0 , < 2.40.1 (semver)
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-16 00:00
Credits
Show details on NVD website

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CVE-2026-102146 (GCVE-0-2026-102146)

Vulnerability from cvelistv5 – Published: 2026-09-30 20:08 – Updated: 2026-10-01 13:37
VLAI
Title
Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection
Summary
An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:25 UTC
CWE
  • CWE-73 - External Control of File Name or Path
Impacted products
Vendor Product Version
Kiteworks Email Protection Gateway Affected: 0 , < 9.5.1 (custom)
Unaffected: 9.5.1
Create a notification for this product.
Date Public
2026-09-30 00:00
Show details on NVD website

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CVE-2026-102141 (GCVE-0-2026-102141)

Vulnerability from cvelistv5 – Published: 2026-09-30 20:10 – Updated: 2026-09-30 20:10
VLAI
Title
Kiteworks Core Privilege Escalation through External Control of File Name or Path
Summary
Two Kiteworks Core cluster-management operations did not validate file paths supplied to them, so an attacker holding root on one node of a cluster could write files as root onto another node and cause them to be executed there. Exploitation requires backend root access on a cluster node and a pending software patch present on the target node.
CWE
  • CWE-73 - External Control of File Name or Path
  • CWE-269 - Improper Privilege Management
Impacted products
Vendor Product Version
Kiteworks Core Affected: 0 , < 9.5.1 (custom)
Unaffected: 9.5.1
Create a notification for this product.
Date Public
2026-09-30 00:00
Show details on NVD website

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CVE-2026-101126 (GCVE-0-2026-101126)

Vulnerability from cvelistv5 – Published: 2026-09-29 17:02 – Updated: 2026-10-01 04:50
VLAI
Title
Joomla Extension - balbooa.com - File meta data tampering in Balbooa Forms < 2.4.3.4
Summary
Joomla Extension - balbooa.com - File meta data tampering in Balbooa Forms < 2.4.3.4 - The final form submission processes JSON arrays per upload field, checking only that IDs are numeric. Client-supplied filenames and display names are trusted directly, introducing potential cross-session claiming, metadata tampering, and path traversal risks (e.g., via getFilePath())
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:50 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory
  • CWE-73 - Destructive File Deletion and Potential System Compromise
References
URL Tags
https://www.balbooa.com/ product
Impacted products
Show details on NVD website

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CVE-2026-100638 (GCVE-0-2026-100638)

Vulnerability from cvelistv5 – Published: 2026-09-26 13:23 – Updated: 2026-09-30 13:02
VLAI
Title
SiYuan before v3.8.4 Path Traversal via setNotebookIcon
Summary
SiYuan versions before v3.8.4 contain a path traversal vulnerability in the setNotebookIcon endpoint that allows authenticated administrators to create arbitrary directory trees and write files outside the workspace boundary. Attackers can supply directory traversal sequences in the notebook parameter to escape the workspace data directory and write conf.json files to arbitrary locations accessible by the kernel process.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:01 UTC
CWE
  • CWE-73 - External Control of File Name or Path
References
Impacted products
Vendor Product Version
siyuan-note siyuan Affected: 0 , < 3.8.4 (semver)
Unaffected: 3.8.4 (semver)
    cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-10 00:00
Credits
Show details on NVD website

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CVE-2026-100637 (GCVE-0-2026-100637)

Vulnerability from cvelistv5 – Published: 2026-09-26 13:23 – Updated: 2026-09-26 13:23
VLAI
Title
SiYuan before v3.8.4 Path Traversal via checkoutRepo sessionID
Summary
SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint that allows authenticated administrators to write JSON files outside the workspace. Attackers can supply a sessionID parameter containing directory traversal sequences to overwrite arbitrary JSON files in pre-existing kernel-writable directories outside workspace boundaries.
CWE
  • CWE-73 - External Control of File Name or Path
References
Impacted products
Vendor Product Version
siyuan-note siyuan Affected: 0 , < 3.8.4 (semver)
Unaffected: 3.8.4 (semver)
    cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-10 00:00
Credits
Show details on NVD website

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CVE-2026-97662 (GCVE-0-2026-97662)

Vulnerability from cvelistv5 – Published: 2026-10-01 17:34 – Updated: 2026-10-01 18:17
VLAI
Title
Argument injection in the diff scan operation in AWS security-agent-mcp-server allows arbitrary host file creation, overwrite, and truncation outside the intended workspace
Summary
An argument injection issue in the diff scan operation in AWS security-agent-mcp-server before version 0.2.0 might allow context-dependent threat actors to create, overwrite, or truncate arbitrary files on the host outside the intended workspace directory via a crafted reference value supplied to the diff scan operation. To remediate this issue, users should upgrade to version 0.2.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 18:17 UTC
CWE
  • CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')
  • CWE-73 - External control of file name or path
Impacted products
Vendor Product Version
AWS security-agent-mcp-server Affected: 0.1.1 , < 0.2.0 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-96656 (GCVE-0-2026-96656)

Vulnerability from cvelistv5 – Published: 2026-09-23 16:07 – Updated: 2026-09-23 16:46
VLAI
Title
Plex Media Server arbitrary file write
Summary
Plex Media Server before 1.43.3.10861 allows an admin user to write arbitrary files that may be executed on load. The preference TranscoderH264Options is appended verbatim to x264's option string on every transcode. At startup, all .so files are run without signature, execute bit, or symbol checks.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-09-14 18:24 UTC
CWE
  • CWE-73 - External Control of File Name or Path
Impacted products
Vendor Product Version
Plex Media Server Affected: 0 , < 1.43.3.10861 (custom)
Unaffected: 1.43.3.10861
Create a notification for this product.
Date Public
2026-08-03 00:00
Credits
Show details on NVD website

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Mitigation
Architecture and Design

When the set of filenames is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames, and reject all other inputs. For example, ID 1 could map to "inbox.txt" and ID 2 could map to "profile.txt". Features such as the ESAPI AccessReferenceMap provide this capability.

Mitigation
Architecture and Design Operation
  • Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict all access to files within a particular directory.
  • Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation
Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation MIT-5.1
Implementation

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.
  • When validating filenames, use stringent allowlists that limit the character set to be used. If feasible, only allow a single "." character in the filename to avoid weaknesses such as CWE-23, and exclude directory separators such as "/" to avoid CWE-36. Use a list of allowable file extensions, which will help to avoid CWE-434.
  • Do not rely exclusively on a filtering mechanism that removes potentially dangerous characters. This is equivalent to a denylist, which may be incomplete (CWE-184). For example, filtering "/" is insufficient protection if the filesystem also supports the use of "\" as a directory separator. Another possible error could occur when the filtering is applied in a way that still produces dangerous data (CWE-182). For example, if "../" sequences are removed from the ".../...//" string in a sequential fashion, two instances of "../" would be removed from the original string, but the remaining characters would still form the "../" string.
Mitigation
Implementation

Use a built-in path canonicalization function (such as realpath() in C) that produces the canonical version of the pathname, which effectively removes ".." sequences and symbolic links (CWE-23, CWE-59).

Mitigation
Installation Operation

Use OS-level permissions and run as a low-privileged user to limit the scope of any successful attack.

Mitigation
Operation Implementation

If you are using PHP, configure your application so that it does not use register_globals. During implementation, develop your application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.

Mitigation
Testing

Use tools and techniques that require manual (human) analysis, such as penetration testing, threat modeling, and interactive tools that allow the tester to record and modify an active session. These may be more effective than strictly automated techniques. This is especially the case with weaknesses that are related to design and business rules.

CAPEC-13: Subverting Environment Variable Values

The adversary directly or indirectly modifies environment variables used by or controlling the target software. The adversary's goal is to cause the target software to deviate from its expected operation in a manner that benefits the adversary.

CAPEC-267: Leverage Alternate Encoding

An adversary leverages the possibility to encode potentially harmful input or content used by applications such that the applications are ineffective at validating this encoding standard.

CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic

This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple ways of encoding a URL and abuse the interpretation of the URL. A URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.

CAPEC-72: URL Encoding

This attack targets the encoding of the URL. An adversary can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL.

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.

CAPEC-78: Using Escaped Slashes in Alternate Encoding

This attack targets the use of the backslash in alternate encoding. An adversary can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the adversary tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.

CAPEC-79: Using Slashes in Alternate Encoding

This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.

CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic

This attack is a specific variation on leveraging alternate encodings to bypass validation logic. This attack leverages the possibility to encode potentially harmful input in UTF-8 and submit it to applications not expecting or effective at validating this encoding standard making input filtering difficult. UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. Legal UTF-8 characters are one to four bytes long. However, early version of the UTF-8 specification got some entries wrong (in some cases it permitted overlong characters). UTF-8 encoders are supposed to use the "shortest possible" encoding, but naive decoders may accept encodings that are longer than necessary. According to the RFC 3629, a particularly subtle form of this attack can be carried out against a parser which performs security-critical validity checks against the UTF-8 encoded form of its input, but interprets certain illegal octet sequences as characters.