CVE-2026-67623

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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: None knownExposed: 0

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

Mistral Vibe before 2.23.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary commands by embedding a malicious core.fsmonitor hook in a repository's .git/config file, which is triggered when vibe invokes git status --porcelain without suppressing hook execution. Attackers can distribute or create a crafted repository containing a malicious fsmonitor entry to achieve arbitrary command execution with the victim's full privileges when any vibe command is run inside that repository.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 2026

Advisory Details (5)

Auto-updated Aug 5, 2026
Patch available. Sources: github_release, github_pr.
generic

Mistral Vibe < 2.23.3 Arbitrary Command Execution via git fsmonitor Hook | Advisories | VulnCheck

https://www.vulncheck.com/advisories/mistral-vibe-arbitrary-command-execution-via-git-fsmonitor-hook
github_pr

v2.23.3

Fix merged in mistralai/mistral-vibe PR #978 on 2026-08-03 — awaiting tagged release

https://github.com/mistralai/mistral-vibe/pull/978
github_pr

fix(security): disable git fsmonitor hook execution in project context gathering

Upstream fix in progress (PR #962 · mistralai/mistral-vibe, state=closed)

https://github.com/mistralai/mistral-vibe/pull/962
generic

bug: [Security] Remote Code Execution via `git` configuration · Issue #942 · mistralai/mistral-vibe · GitHub

https://github.com/mistralai/mistral-vibe/issues/942
github_release Patch Available

v2.23.3

Patch available: mistralai/mistral-vibe v2.23.3

https://github.com/mistralai/mistral-vibe/releases/tag/v2.23.3

Vendor Advisories for CVE-2026-67623(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 26× in last 7d / 65× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 17:24 UTCGHSA enrichment
  3. 2026-08-20 06:09 UTCGHSA enrichment
  4. 2026-08-19 18:53 UTCEG score recompute
  5. 2026-08-19 18:53 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 05:37 UTCGHSA enrichment
  8. 2026-08-18 18:21 UTCEG score recompute
  9. 2026-08-18 18:21 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 07:05 UTCGHSA enrichment
  12. 2026-08-17 19:48 UTCEG score recompute
  13. 2026-08-17 19:48 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 08:30 UTCGHSA enrichment
  16. 2026-08-16 21:15 UTCEG score recompute
  17. 2026-08-16 21:15 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 10:00 UTCEG score recompute
  20. 2026-08-16 10:00 UTCGHSA enrichment
  21. 2026-08-15 22:45 UTCGHSA enrichment
  22. 2026-08-15 11:30 UTCEG score recompute
  23. 2026-08-15 11:30 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-15 00:14 UTCGHSA enrichment
Show 40 more
  1. 2026-08-14 12:58 UTCGHSA enrichment
  2. 2026-08-14 01:43 UTCEG score recompute
  3. 2026-08-14 01:43 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 14:27 UTCGHSA enrichment
  6. 2026-08-13 03:12 UTCGHSA enrichment
  7. 2026-08-12 15:57 UTCEG score recompute
  8. 2026-08-12 15:57 UTCGHSA enrichment
  9. 2026-08-12 13:51 UTCEPSS rescore
  10. 2026-08-12 04:42 UTCGHSA enrichment
  11. 2026-08-11 17:27 UTCEG score recompute
  12. 2026-08-11 17:27 UTCGHSA enrichment
  13. 2026-08-11 06:12 UTCEG score recompute
  14. 2026-08-11 06:12 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 18:57 UTCGHSA enrichment
  17. 2026-08-10 07:41 UTCGHSA enrichment
  18. 2026-08-09 20:26 UTCEG score recompute
  19. 2026-08-09 20:26 UTCGHSA enrichment
  20. 2026-08-09 13:47 UTCEPSS rescore
  21. 2026-08-09 09:11 UTCGHSA enrichment
  22. 2026-08-08 21:56 UTCEG score recompute
  23. 2026-08-08 21:56 UTCGHSA enrichment
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 10:40 UTCGHSA enrichment
  26. 2026-08-07 23:25 UTCEG score recompute
  27. 2026-08-07 23:25 UTCGHSA enrichment
  28. 2026-08-07 12:09 UTCGHSA enrichment
  29. 2026-08-07 00:52 UTCEG score recompute
  30. 2026-08-07 00:52 UTCGHSA enrichment
  31. 2026-08-06 13:47 UTCEPSS rescore
  32. 2026-08-06 13:37 UTCEG score recompute
  33. 2026-08-06 13:37 UTCGHSA enrichment
  34. 2026-08-06 13:09 UTCEG score recompute
  35. 2026-08-06 13:09 UTCGHSA enrichment
  36. 2026-08-06 02:42 UTCEG score recompute
  37. 2026-08-06 02:42 UTCGHSA enrichment
  38. 2026-08-05 14:26 UTCEG score recompute
  39. 2026-08-05 13:46 UTCEG score recompute
  40. 2026-08-05 13:45 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-67623?
CVE-2026-67623 is a high vulnerability published on August 5, 2026. Mistral Vibe before 2.23.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary commands by embedding a malicious core.fsmonitor hook in a repository's .git/config file, which is triggered when vibe invokes git status --porcelain without suppressing hook…
When was CVE-2026-67623 disclosed?
CVE-2026-67623 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67623 actively exploited?
CVE-2026-67623 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 57.5% of all scored CVEs.
What is the CVSS score of CVE-2026-67623?
CVE-2026-67623 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-67623?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67623, 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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