CVE-2026-93993

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-20. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges of the user running Vibe.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

September 19, 2026

Last Modified

September 22, 2026

Advisory Details (4)

Auto-updated Sep 19, 2026
Patch available. Sources: github_release.
generic

GitHub - mistralai/mistral-vibe: Minimal CLI coding agent by Mistral · GitHub

https://github.com/mistralai/mistral-vibe
generic

mistral-vibe/vibe/core/git/repo.py at 19b5b74faa78d0816b8d4d4c7d7543fc3520678c · mistralai/mistral-vibe · GitHub

https://github.com/mistralai/mistral-vibe/blob/19b5b74faa78d0816b8d4d4c7d7543fc3520678c/vibe/core/git/repo.py#L411-L431
github_release Patch Available

v2.25.5

Patch available: mistralai/mistral-vibe v2.25.5

https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5
generic

[Security] Remote Code Execution via worktree creation (git hook execution) · Issue #996 · mistralai/mistral-vibe · GitHub

https://github.com/mistralai/mistral-vibe/issues/996

Vendor Advisories for CVE-2026-93993(1)

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 28× in last 7d / 28× 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. 2026-09-25 00:20 UTCEG score recompute
  2. 2026-09-25 00:20 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 11:27 UTCGHSA enrichment
  5. 2026-09-23 22:35 UTCEG score recompute
  6. 2026-09-23 22:35 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 09:44 UTCGHSA enrichment
  9. 2026-09-22 20:52 UTCGHSA enrichment
  10. 2026-09-22 17:07 UTCEG score recompute
  11. 2026-09-22 17:07 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 04:15 UTCEG score recompute
  14. 2026-09-22 04:15 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 15:23 UTCEG score recompute
  17. 2026-09-21 15:23 UTCGHSA enrichment
  18. 2026-09-21 14:25 UTCEG score recompute
  19. 2026-09-21 14:25 UTCGHSA enrichment
  20. 2026-09-21 14:08 UTCGHSA enrichment
  21. 2026-09-21 01:16 UTCEG score recompute
  22. 2026-09-21 01:16 UTCGHSA enrichment
  23. 2026-09-20 20:16 UTCEPSS rescore
  24. 2026-09-20 12:22 UTCEG score recompute
  25. 2026-09-20 12:22 UTCGHSA enrichment
Show 3 more
  1. 2026-09-19 23:27 UTCEG score recompute
  2. 2026-09-19 23:00 UTCEG score recompute
  3. 2026-09-19 23:00 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93993?
CVE-2026-93993 is a high vulnerability published on September 19, 2026. Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges of the user…
When was CVE-2026-93993 disclosed?
CVE-2026-93993 was first published in the National Vulnerability Database on September 19, 2026, with the most recent update on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93993 actively exploited?
CVE-2026-93993 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.8% of all scored CVEs.
What is the CVSS score of CVE-2026-93993?
CVE-2026-93993 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-93993?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93993, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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