CVE-2026-41414CWE-94

Skim: Arbitrary code execution via pull_request_target fork checkout in pr.yml

High · published April 24, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
36.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00436 · 36.9th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-04-24T18:32Z
EPSS history
Timeline
  • 24 APR 18:32Z
    Skim: Arbitrary code execution via pull_request_target fork checkout in pr.yml
    cvelistv5