# CVE-2026-93993 — mistralai mistral-vibe

> As of 2026-09-19, CVE-2026-93993 is a HIGH-severity vulnerability in mistralai mistral-vibe, CVSS v3.1 8.8, EPSS 0.6% (47.6th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-93993 as of 2026-09-19; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-19

## 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.

The record classifies CVE-2026-93993 under weakness class [CWE-829](https://intel.threadlinqs.com/cwe/CWE-829). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 16 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 8.6 (`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`)
- **EPSS (FIRST):** 0.6% probability of exploitation in the next 30 days, higher than 47.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-19

## Is CVE-2026-93993 being exploited?

It currently carries a trending score of 42 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **mistralai**: mistral-vibe

## How to fix CVE-2026-93993

No vendor patch reference has been recorded for CVE-2026-93993 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-93993

No threat campaign in the Threadlinqs corpus currently references CVE-2026-93993, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-09-20. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553)
- [github.com — release notes](https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5)

**Technical analysis**

- [github.com — technical description](https://github.com/mistralai/mistral-vibe/blob/19b5b74faa78d0816b8d4d4c7d7543fc3520678c/vibe/core/git/repo.py#L411-L431)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/mistral-vibe-before-2.25.5-remote-code-execution-via-git-post-checkout)

**Issue tracking and product pages**

- [github.com — issue tracking](https://github.com/mistralai/mistral-vibe/issues/996)
- [github.com — product](https://github.com/mistralai/mistral-vibe)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-93993
Full detection coverage and IOCs for threats exploiting CVE-2026-93993 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp