CVE-2026-34243 | THREATINT

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.

PUBLISHED Reserved 2026-03-26 | Published 2026-03-31 | Updated 2026-04-02 | Assigner GitHub_M

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

<= 0.3.1

affected

References

github.com/...enxian/security/advisories/GHSA-r4fj-r33x-8v88

cve.org (CVE-2026-34243)

nvd.nist.gov (CVE-2026-34243)

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