CVE-2026-41414 Skim: Arbitrary code execution via pull_request_target fork checkout in pr.yml
Attackers can execute arbitrary code and steal secrets by opening a pull request due to unsafe checkout in CI workflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-41414?
CVE-2026-41414 is a high-severity code injection vulnerability in skim-rs skim, published on 24 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-41414?
It affects 1 product.
Linux distribution packages (1)
skim openSUSE:Tumbleweed | All versions | 4.6.1-1.1 |
Products include Skim-Rs Skim.
How do I fix CVE-2026-41414?
Apply the vendor's patch.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-41414 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41414 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9g93-rxr5-xhqw, openSUSE-SU-2026:10683-1.