# 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.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N`)
- **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:** Yes
- **Published:** 24 Apr 2026
- **Updated:** 27 Apr 2026
- **Also known as:** GHSA-9g93-rxr5-xhqw, openSUSE-SU-2026:10683-1

## 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 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-41414?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `skim` | openSUSE:Tumbleweed | All versions | 4.6.1-1.1 |

Products: Skim-Rs Skim.

## How do I fix CVE-2026-41414?

Apply the vendor's patch.

## 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:

- Security-research lab reproducing CVE-2026-41414 (pull_request_target pwn in .github/workflows/pr.yml) — snapshot of skim-rs/skim @ ca986f4, not a fork. (github_poc): https://github.com/pvharmo2/gha-lab-456dd8a245

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41414 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41414 exists.

Affected product: skim-rs skim. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-41414/ (Markdown: https://insights.sbomify.com/CVE-2026-41414/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41414
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41414
- OSV: https://osv.dev/vulnerability/CVE-2026-41414

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-41414/
Summaries are generated and may contain mistakes; the official description above is the record.