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Vulnerability record · CVE-2026-100419 · published 25 September 2026

CVE-2026-100419: Link following vulnerability

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.

7.3 CVSS 4.0 High EPSS 0.15% · top 96.7% CWE-59 · Link following Deferred
7.3CVSS 4.0 base score
0.15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
28 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:

References

LinkTags
https://github.com/GitoxideLabs/gitoxide
https://github.com/GitoxideLabs/gitoxide/blob/gix-fs-v0.22.1/gix-fs/src/stack.rs#L185-L196
https://github.com/GitoxideLabs/gitoxide/commit/b62498378b8bc2c95863a044b700f2063b0b5875
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-6p9q-f2xg-6pr5
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q
https://www.vulncheck.com/advisories/gitoxide-gix-fs-before-0.23.0-worktree-escape-via-symlink
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q

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Source: NIST National Vulnerability Database (record CVE-2026-100419), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.