Common Weakness Enumeration
CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
2298 vulnerabilities reference this CWE, most recent first.
CVE-2026-100419 (GCVE-0-2026-100419)
Vulnerability from cvelistv5 – Published: 2026-09-25 22:04 – Updated: 2026-09-28 13:06
VLAI
EPSS
VEX
Title
gitoxide gix-fs before 0.23.0 Worktree Escape via Symlink
Summary
gitoxide gix-fs before 0.23.0 contains a path validation bypass vulnerability in the worktree checkout mechanism that allows attackers to escape the worktree directory via symlink manipulation. During forced checkout with overwrite_existing enabled, attackers can craft malicious repository trees where symlink entries replace validated directories, causing subsequent files to be written outside the worktree through the symlink for code execution or file manipulation.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:05 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security… | vendor-advisory |
| https://github.com/GitoxideLabs/gitoxide/commit/b… | patch |
| https://github.com/GitoxideLabs/gitoxide/blob/gix… | technical-description |
| https://github.com/GitoxideLabs/gitoxide/security… | relatedvendor-advisory |
| https://github.com/GitoxideLabs/gitoxide | product |
| https://www.vulncheck.com/advisories/gitoxide-gix… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.23.0
(semver)
Unaffected: 0.23.0 (semver) cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:* |
Date Public
2026-09-25 00:00
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CVE-2026-96284 (GCVE-0-2026-96284)
Vulnerability from cvelistv5 – Published: 2026-09-27 22:04 – Updated: 2026-09-29 16:04
VLAI
EPSS
VEX
Title
Flatpak: flatpak: arbitrary read-access to files in the system-helper context via oci symlink following
Summary
A malicious user can get read-access to files in the flatpak-system-helper context if a system OCI repository is configured, because the OCI code paths in the system helper follow symlinks when importing OCI images that are under the user's control.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 16:04 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-96284 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2539423 | issue-trackingx_refsource_REDHAT |
| https://github.com/flatpak/flatpak/security/advis… |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2026-04-07 00:00
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CVE-2026-96282 (GCVE-0-2026-96282)
Vulnerability from cvelistv5 – Published: 2026-09-27 21:53 – Updated: 2026-09-28 12:58
VLAI
EPSS
VEX
Title
Flatpak: flatpak: extension metadata path traversal file existence oracle
Summary
A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at unintended locations inside the sandbox.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 12:58 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-96282 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2539422 | issue-trackingx_refsource_REDHAT |
| https://github.com/flatpak/flatpak/security/advis… |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2026-08-11 00:00
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CVE-2026-96279 (GCVE-0-2026-96279)
Vulnerability from cvelistv5 – Published: 2026-09-27 19:49 – Updated: 2026-09-28 13:56
VLAI
EPSS
VEX
Title
Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks
Summary
A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as /etc/shadow.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:54 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-96279 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2539417 | issue-trackingx_refsource_REDHAT |
| https://github.com/flatpak/flatpak/security/advis… |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2026-08-11 00:00
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CVE-2026-94620 (GCVE-0-2026-94620)
Vulnerability from cvelistv5 – Published: 2026-10-01 15:38 – Updated: 2026-10-01 16:18
VLAI
EPSS
VEX
Title
Classroom 50 vulnerable to arbitrary file overwrite on the teacher's machine via symlink in a student repo (gh teacher download)
Summary
Classroom 50 is a free and open-source tool for managing and grading programming assignments via GitHub. Prior to version 1.11.0, `gh teacher download` clones each student's assignment repository and then writes autograde artifacts (`result.json` and `results.json`) into the just-cloned working tree. The write followed symlinks, so a student who committed `result.json` or `results.json` as a **symlink** (materialized verbatim by `git clone`) could redirect the teacher's write to an arbitrary path — e.g. `~/.zshrc`, `~/.ssh/authorized_keys`, a cron file, or an in-clone `.git/hooks/*` file that git subsequently executes. The written bytes are attacker-controlled (the student's uploaded release asset for `result.json`; student-chosen submit-tag names for `results.json`). This is an arbitrary file write leading to code execution as the teacher, whose `gh` token carries `admin:org`, `repo`, and `workflow` across the entire classroom organization. Version 1.11.0 contains a patch. Some workarounds are available. Avoid running `gh teacher download` against untrusted student repositories, or run it inside a disposable sandbox / container with no access to sensitive host files or credentials. Inspect cloned trees for symlinked, hardlinked, or special (`result.json`/`results.json`) entries before allowing the artifact-refresh step to run.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 16:17 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/foundation50/classroom50/secur… | x_refsource_CONFIRM |
| https://github.com/foundation50/classroom50/commi… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| foundation50 | classroom50 |
Affected:
< 1.11.0
|
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CVE-2026-93353 (GCVE-0-2026-93353)
Vulnerability from cvelistv5 – Published: 2026-09-24 20:29 – Updated: 2026-10-01 15:21 X_Open Source
VLAI
EPSS
VEX
Title
copyparty SFTP Volume Restriction Bypass via mkdir/rmdir/chattr Handlers
Summary
copyparty contains a volume restriction bypass vulnerability in its SFTP front end that allows authenticated SFTP users to create, remove, and truncate arbitrary paths outside permitted volume boundaries by exploiting three handlers that bypass the xvol volflag enforcement. The _mkdir, _rmdir, and _chattr handlers construct destination paths using vfs.get(), vn.canonical(), and os.path.join() without invoking the chk_ap access check, enabling attackers to traverse symlinks leaving a volume's top directory and perform unauthorized file creation, deletion, or truncation via SSH_FXP_SETSTAT operations on paths outside any volume the account is authorized to access.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 15:50 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://euriconicacio.github.io/blog/cve-2026-933… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/copyparty-sf… | third-party-advisory |
Impacted products
Date Public
2026-09-24 00:00
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CVE-2026-92371 (GCVE-0-2026-92371)
Vulnerability from cvelistv5 – Published: 2026-09-29 15:41 – Updated: 2026-09-30 15:28
VLAI
EPSS
VEX
Title
Local Privilege Escalation via Improper Link Resolution in Cloud Session Recording
Summary
TeamViewer Full Client and Host for Linux prior version 15.82 contains an improper path validation vulnerability in the Cloud Session Recording (CSR) functionality. By exploiting a race condition during path validation and subsequent file access, a local authenticated attacker may cause privileged file operations in unintended locations on the affected system.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:12 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
References
1 reference
| URL | Tags |
|---|---|
| https://www.teamviewer.com/en/resources/trust-cen… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| TeamViewer | Full Client |
Affected:
15.0 , < 15.82
(custom)
|
|
| TeamViewer | Host |
Affected:
15.0 , < 15.82
(custom)
|
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CVE-2026-92253 (GCVE-0-2026-92253)
Vulnerability from cvelistv5 – Published: 2026-09-20 12:24 – Updated: 2026-09-21 14:12
VLAI
EPSS
VEX
Title
Arbitrary File Write via Directory Junction in WatchDog Anti-Virus Quarantine Restoration
Summary
Improper link resolution before file access in the quarantine restoration process of WatchDog Anti-Virus 1.8.640 on Windows allows local, low-privileged attackers to cause a quarantined file to be written to an arbitrary filesystem location by creating a directory junction at the original file path and persuading an administrator to restore the file. This may enable modification of protected files or SYSTEM-level code execution through DLL hijacking.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:11 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WatchDog | Anti-Virus |
Affected:
1.8.640 , < 1.8.804
(semver)
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CVE-2026-90930 (GCVE-0-2026-90930)
Vulnerability from cvelistv5 – Published: 2026-09-14 12:48 – Updated: 2026-09-14 14:17
VLAI
EPSS
VEX
Title
File Browser through 2.63.23 Path Traversal via Symlink Alias
Summary
File Browser through 2.63.23 applies path rules to the requested lexical path but resolves symbolic links without reapplying rules to the target, allowing authenticated users to bypass deny rules. Attackers can read and overwrite rule-denied files by accessing them through in-scope symbolic link aliases that resolve to denied paths.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 14:17 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/filebrowser/filebrowser/securi… | vendor-advisory |
| https://www.vulncheck.com/advisories/file-browser… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| filebrowser | filebrowser |
Affected:
0 , ≤ 2.63.23
(semver)
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* |
Date Public
2026-08-31 00:00
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CVE-2026-90807 (GCVE-0-2026-90807)
Vulnerability from cvelistv5 – Published: 2026-09-14 17:45 – Updated: 2026-09-16 15:59 X_Open Source
VLAI
EPSS
VEX
Title
nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following
Summary
A vulnerability was found in nanocoai NanoClaw up to 2.1.17. This issue affects the function forwardAttachedFiles of the file src/modules/agent-to-agent/agent-route.ts of the component Attachment Handler. The manipulation results in link following. The attack may be performed from remote. The exploit has been made public and could be used. The patch is identified as 3f9ed607b7e7a4872747295f75286f1c377d7c33. It is advisable to implement a patch to correct this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:58 UTC
CWE
- CWE-59 - Link Following
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403309 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403309/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90807 | third-party-advisory |
| https://vuldb.com/submit/922841 | third-party-advisory |
| https://github.com/nanocoai/nanoclaw/issues/2828 | exploitissue-tracking |
| https://github.com/nanocoai/nanoclaw/commit/3f9ed… | patch |
| https://github.com/nanocoai/nanoclaw/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nanocoai | NanoClaw |
Affected:
2.1.0
Affected: 2.1.1 Affected: 2.1.2 Affected: 2.1.3 Affected: 2.1.4 Affected: 2.1.5 Affected: 2.1.6 Affected: 2.1.7 Affected: 2.1.8 Affected: 2.1.9 Affected: 2.1.10 Affected: 2.1.11 Affected: 2.1.12 Affected: 2.1.13 Affected: 2.1.14 Affected: 2.1.15 Affected: 2.1.16 Affected: 2.1.17 cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:* |
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"cveId": "CVE-2026-90807",
"datePublished": "2026-09-14T17:45:14.424Z",
"dateReserved": "2026-09-13T16:00:34.907Z",
"dateUpdated": "2026-09-16T15:59:52.020Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
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.