CVE-2026-100419

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.0Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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 v3
7.0
EG Score
7.0HIGHhigh confidence
EG Risk
48
EG Risk 48/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 25, 2026

Last Modified

September 28, 2026

Advisory Details (6)

Auto-updated Sep 25, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

gitoxide gix-fs before 0.23.0 Worktree Escape via Symlink | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gitoxide-gix-fs-before-0.23.0-worktree-escape-via-symlink
generic

GitHub - GitoxideLabs/gitoxide: An idiomatic, lean, fast & safe pure Rust implementation of Git · GitHub

https://github.com/GitoxideLabs/gitoxide
github Patch Available🟡 PoC Available

Symlink prefix-reuse allows worktree escape during checkout · Advisory · GitoxideLabs/gitoxide · GitHub

https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q
generic

gitoxide/gix-fs/src/stack.rs at gix-fs-v0.22.1 · GitoxideLabs/gitoxide · GitHub

https://github.com/GitoxideLabs/gitoxide/blob/gix-fs-v0.22.1/gix-fs/src/stack.rs#L185-L196
github_commit Patch Available

commit b62498378b8b (GitoxideLabs/gitoxide)

Patch available: GitoxideLabs/gitoxide gix-trace-v0.2.0 (contains commit b62498378b8b)

https://github.com/GitoxideLabs/gitoxide/commit/b62498378b8bc2c95863a044b700f2063b0b5875
github Patch Available

Force checkout replaces a directory with an attacker symlink while the prefix guard is disarmed, so the GHSA-f89h fix is bypassed and writes land outside the worktree · Advisory · GitoxideLabs/gitoxide · GitHub

https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-6p9q-f2xg-6pr5

Vendor Advisories for CVE-2026-100419(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 34× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 01:42 UTCEG score recompute
  2. 2026-10-04 01:42 UTCVendor advisory
  3. 2026-10-04 01:42 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 12:36 UTCVendor advisory
  6. 2026-10-03 12:36 UTCGHSA enrichment
  7. 2026-10-02 23:29 UTCEG score recompute
  8. 2026-10-02 23:29 UTCVendor advisory
  9. 2026-10-02 23:28 UTCGHSA enrichment
  10. 2026-10-02 10:19 UTCVendor advisory
  11. 2026-10-02 10:19 UTCGHSA enrichment
  12. 2026-10-01 21:13 UTCEG score recompute
  13. 2026-10-01 21:13 UTCVendor advisory
  14. 2026-10-01 21:13 UTCGHSA enrichment
  15. 2026-10-01 19:49 UTCEPSS rescore
  16. 2026-10-01 08:05 UTCVendor advisory
  17. 2026-10-01 08:05 UTCGHSA enrichment
  18. 2026-09-30 18:59 UTCEG score recompute
  19. 2026-09-30 18:59 UTCGHSA enrichment
  20. 2026-09-30 15:02 UTCEPSS rescore
  21. 2026-09-30 05:53 UTCGHSA enrichment
  22. 2026-09-29 16:46 UTCEG score recompute
  23. 2026-09-29 16:46 UTCGHSA enrichment
  24. 2026-09-29 15:20 UTCEPSS rescore
  25. 2026-09-29 03:33 UTCEG score recompute
Show 17 more
  1. 2026-09-29 03:33 UTCGHSA enrichment
  2. 2026-09-28 14:26 UTCEG score recompute
  3. 2026-09-28 14:26 UTCGHSA enrichment
  4. 2026-09-28 13:50 UTCEPSS rescore
  5. 2026-09-28 13:27 UTCEG score recompute
  6. 2026-09-28 13:27 UTCGHSA enrichment
  7. 2026-09-28 02:51 UTCEG score recompute
  8. 2026-09-28 02:51 UTCGHSA enrichment
  9. 2026-09-27 13:44 UTCGHSA enrichment
  10. 2026-09-27 00:37 UTCEG score recompute
  11. 2026-09-27 00:37 UTCGHSA enrichment
  12. 2026-09-26 15:58 UTCEPSS rescore
  13. 2026-09-26 11:31 UTCEG score recompute
  14. 2026-09-26 11:30 UTCGHSA enrichment
  15. 2026-09-25 22:22 UTCEG score recompute
  16. 2026-09-25 22:09 UTCEG score recompute
  17. 2026-09-25 22:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100419?
CVE-2026-100419 is a high vulnerability published on September 25, 2026. 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…
When was CVE-2026-100419 disclosed?
CVE-2026-100419 was first published on September 25, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100419 actively exploited?
CVE-2026-100419 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100419?
CVE-2026-100419 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100419?
A fix for CVE-2026-100419 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100419 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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