CVE-2026-122135

HIGH 8.8

Mistral Vibe before 3.0.3 RCE via Repository-Configured gpg.program

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-829
Vendor	mistralai
Product	mistral-vibe
Published	Nov 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

mistralai / mistral-vibe

0 < 3.0.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mistralai/mistral-vibe/commit/7bb48f213ac677f943d5c791199ed3dddf302f00 github.com: https://github.com/mistralai/mistral-vibe github.com: https://github.com/mistralai/mistral-vibe/blob/v3.0.3/CHANGELOG.md?plain=1#L113 github.com: https://github.com/mistralai/mistral-vibe/releases/tag/v3.0.3 github.com: https://github.com/mistralai/mistral-vibe/blob/v3.0.2/vibe/core/system_prompt.py#L52-L67 vulncheck.com: https://www.vulncheck.com/advisories/mistral-vibe-before-3.0.3-rce-via-repository-configured-gpg-program

Credits

Francisco Rosales (Manifold Security)