Vulnerability in Mistralai Mistral-Vibe
CVE-2026-67623
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Mistralai Mistral-Vibe — versions 0
Weakness classification (CWE)
References
- github.com/mistralai/mistral-vibe/releases/tag/v2.23.3 (release-notes)
- github.com/mistralai/mistral-vibe/issues/942 (technical-description, exploit)
- github.com/mistralai/mistral-vibe/pull/962 (issue-tracking)
- github.com/mistralai/mistral-vibe/pull/978 (issue-tracking)
- github.com/mistralai/mistral-vibe/commit/68ff32e6a92e80a874c8153312f0aa8ae49554… (patch)
- www.vulncheck.com/advisories/mistral-vibe-arbitrary-command-execution-via-git-f… (third-party-advisory)
- therealcoiffeur.com/c111011.html (technical-description, exploit)
Frequently asked questions
- What is CVE-2026-67623?
- CVE-2026-67623 is a high-severity vulnerability in Mistralai Mistral-Vibe, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2026-08-05.
- How severe is CVE-2026-67623?
- High severity. CVSS v3 base score is 8.8 out of 10.