Skip to content
OpenAdvisories
Critical · 9.8 Public exploit CVE-2026-34243 EUVD-2026-17522GHSA-r4fj-r33x-8v88

wenxian: Command Injection in GitHub Actions Workflow via `issue_comment.body`

Published Mar 31, 2026 · Updated Apr 2, 2026 · Assigned by GitHub_M

Vendor: njzjz Product: wenxian Package: njzjz/wenxian Ecosystem: GitHub Actions

Description

wenxian is a tool to generate BIBTEX files from given identifiers (DOI, PMID, arXiv ID, or paper title). In versions 0.3.1 and prior, a GitHub Actions workflow uses untrusted user input from issue_comment.body directly inside a shell command, allowing potential command injection and arbitrary code execution on the runner. At time of publication, there are no publicly available patches.

Affected products

VendorProductAffectedFixed
njzjz wenxian <= 0.3.1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • pvharmo2/gha-lab-85f022290a ★ 0 · Sep 5, 2026

    Research lab reproduction of CVE-2026-34243 (GHSA-r4fj-r33x-8v88): command injection via issue_comment.body in .github/workflows/comment.yaml — snapshot of njzjz/wenxian@ca4e04de86aa970c0e3cb1c7f2bd1…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
GitHub Actions njzjz/wenxian <= 0.3.1 — GHSA-r4fj-r33x-8v88

References