What is CVE-2026-34243?

CVE-2026-34243 is a critical-severity vulnerability in Njzjz Wenxian, classified under Command Injection. CVSS score: 9.8/10. Published 2026-03-31.

How severe is CVE-2026-34243?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Njzjz Wenxian

CVE-2026-34243

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 comma…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (23.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Njzjz Wenxian — versions <= 0.3.1

Weakness classification (CWE)

References

https://github.com/njzjz/wenxian/security/advisories/GHSA-r4fj-r33x-8v88 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34243?: CVE-2026-34243 is a critical-severity vulnerability in Njzjz Wenxian, classified under Command Injection. CVSS score: 9.8/10. Published 2026-03-31.
How severe is CVE-2026-34243?: Critical severity. CVSS v3 base score is 9.8 out of 10.