What is CVE-2026-51859?

CVE-2026-51859 is a critical-severity vulnerability in N/a, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-09-30.

How severe is CVE-2026-51859?

Critical severity. CVSS v3 base score is 9.1 out of 10.

CVE-2026-51859

bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in save_download_file (src/backend/bisheng/core/cache/utils.py:290).

Published 2026-09-30 · last modified 2026-10-01.

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

What is CVE-2026-51859?: CVE-2026-51859 is a critical-severity vulnerability in N/a, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-09-30.
How severe is CVE-2026-51859?: Critical severity. CVSS v3 base score is 9.1 out of 10.