# CVE-2026-122135: Mistral Vibe before 3.0.3 RCE via Repository-Configured gpg.program

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/mistralai/mistral-vibe/commit/7bb48f213ac677f943d5c791199ed3dddf302f00

## Affected products and versions

- mistralai / mistral-vibe (mistral-vibe): ≥ 0; < 3.0.3 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.6 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-829

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/mistralai/mistral-vibe/commit/7bb48f213ac677f943d5c791199ed3dddf302f00 (CNA: VulnCheck; patch)

- https://github.com/mistralai/mistral-vibe (CNA: VulnCheck; product)

- https://github.com/mistralai/mistral-vibe/blob/v3.0.3/CHANGELOG.md?plain=1#L113 (CNA: VulnCheck; release-notes)

- https://github.com/mistralai/mistral-vibe/releases/tag/v3.0.3 (CNA: VulnCheck; release-notes)

- https://github.com/mistralai/mistral-vibe/blob/v3.0.2/vibe/core/system_prompt.py#L52-L67 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/mistral-vibe-before-3.0.3-rce-via-repository-configured-gpg-program (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-122135; retrieved 2026-11-04; source updated 2026-11-04

Revision: 5e4419de9004c1d1b6e38314e5498e462126f2a6068291a17665c554adda9e05

Canonical: https://y2.dev/cve/CVE-2026-122135

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