CVE-2026-34243

CRITICAL

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0217
EPSS Percentile 79.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-77 CWE-78
Status published
Products (3)
GitHub Actions/njzjz/wenxian 0GitHub Actions
njzjz/wenxian < 0.3.1
njzjz/wenxian <= 0.3.1
Published Mar 31, 2026
Tracked Since Mar 31, 2026