EEF-CVE-2026-43965
- Source
- https://cna.erlef.org/osv/EEF-CVE-2026-43965.html
- Import Source
- https://cna.erlef.org/osv/EEF-CVE-2026-43965.json
- JSON Data
- https://api.osv.dev/v1/vulns/EEF-CVE-2026-43965
- Aliases
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- CVE-2026-43965
- GHSA-jqvf-f6p2-wrv3
- Published
- 2026-06-02T13:41:37.421Z
- Modified
- 2026-06-02T19:14:19.113Z
- Severity
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- 5.6 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Path Traversal in build/packages/packages.toml Allows Arbitrary Directory Deletion
- Details
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Summary
Path traversal vulnerability in Gleam's dependency management allows arbitrary directory deletion via malicious build/packages/packages.toml content.
Package keys read from build/packages/packages.toml by LocalPackages::readfromdisc are passed without validation to paths.buildpackagespackage(), which constructs a filesystem path by joining the project build directory with the attacker-controlled key. The resulting path is then passed to fs::deletedirectory (which calls removedir_all). No check is performed to ensure the path remains within the intended build/packages/ directory. Both absolute paths and relative traversal sequences (e.g. ../) are accepted as package keys, allowing deletion of arbitrary directories.
An attacker who can cause a victim to run gleam deps download on a project containing a malicious build/packages/packages.toml (e.g. by committing the normally-gitignored file to a repository) can cause arbitrary directories on the victim's system to be recursively deleted.
This issue affects Gleam from 0.18.0-rc1 until 1.17.0.
- Database specific
{ "cpe_ids": [ "cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*" ], "capec_ids": [ "CAPEC-139", "CAPEC-597" ], "cwe_ids": [ "CWE-22" ] }- References
- Credits
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- Aly (spect3r1) - FINDER
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- Abdelrahman Ahmed Aboelkasem (0x2face) - FINDER
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- Louis Pilfold - REMEDIATION_DEVELOPER
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- Jonatan Männchen / EEF - ANALYST
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