CVE-2026-93993 (CVSS 8.8)

Description

Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges of the user running Vibe.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0077

Probability of exploitation

0.54%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-829 CWE-829

References

Other References

https://github.com/mistralai/mistral-vibe https://github.com/mistralai/mistral-vibe/blob/19b5b74faa78d0816b8d4d4c7d7543fc3520678c/vibe/core/git/repo.py#L411-L431 https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553 https://github.com/mistralai/mistral-vibe/issues/996 https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5 https://www.vulncheck.com/advisories/mistral-vibe-before-2.25.5-remote-code-execution-via-git-post-checkout https://github.com/mistralai/mistral-vibe/issues/996

Frequently Asked Questions

What is CVE-2026-93993? +

Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges of the user running Vibe. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-93993? +

CVE-2026-93993 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0077, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-93993? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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