Vulnerability in Chorny Apache\
CVE-2025-40931
Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand()…
EPSS: 0.006 (44.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
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.
Affected products
- Chorny Apache\ — versions \
- Chorny Apache::session::generate::md5 — versions 0
Weakness classification (CWE)
References
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (Product)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (technical-description, Mailing List, Third Party Advisory)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking, Issue Tracking)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking, Third Party Advisory)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (mailing-list)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (patch)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-40931?
- CVE-2025-40931 is a critical-severity vulnerability in Chorny Apache\, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 9.1/10. Published 2026-03-05.
- How severe is CVE-2025-40931?
- Critical severity. CVSS v3 base score is 9.1 out of 10.