Is CVE-2026-34243 actively exploited?

No active exploitation of CVE-2026-34243 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34243 be exploited remotely?

Yes. CVE-2026-34243 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34243?

CVE-2026-34243 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-34243

CRITICAL

CVE-2026-34243

CWE-77Published: March 31, 2026· Updated: Apr 3, 2026

9.8

CVSS v3.1

EPSS:0.24%probability of exploitation in 30 daysPercentile:47.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34243 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.