Vulnerability in Mistralai Mistral-Vibe
CVE-2026-122135
Mistral Vibe before 3.0.3 contains a remote code execution vulnerability that allows attackers to run commands by abusing repository-configured gpg.program during project context collection. A crafted repository setting gpg.program and log.showSignature with a signed commit makes git log execute the attacker's program at session start, before any trust prompt.
Published .
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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/mistralai/mistral-vibe (product)
- github.com/mistralai/mistral-vibe/blob/v3.0.2/vibe/core/system_prompt.py (technical-description)
- github.com/mistralai/mistral-vibe/blob/v3.0.3/CHANGELOG.md (release-notes)
- Patch Commit (patch)
- mistral-vibe v3.0.3 Release Notes (release-notes)
- VulnCheck Advisory: Mistral Vibe before 3.0.3 RCE via Repository-Configured gpg.program (third-party-advisory)
Frequently asked questions
- What is CVE-2026-122135?
- CVE-2026-122135 is a high-severity vulnerability in Mistralai Mistral-Vibe, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2026-11-04.
- How severe is CVE-2026-122135?
- High severity. CVSS v3 base score is 8.8 out of 10.