What is CVE-2025-15578?

CVE-2025-15578 is a critical-severity vulnerability in Teejay Maypole, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 9.8/10. Published 2026-02-16.

How severe is CVE-2025-15578?

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

Vulnerability in Teejay Maypole

CVE-2025-15578

Maypole versions from 2.10 through 2.13 for Perl generates session ids insecurely. The session id is seeded with the system time (which is available from HTTP response headers), a call to the built-in rand() function, and the PID.

EPSS: 0.003 (19.5th 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

Teejay Maypole — versions 2.121, 2.111, 2.10

Weakness classification (CWE)

CWE-338 — Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (related, Issue Tracking)

Frequently asked questions

What is CVE-2025-15578?: CVE-2025-15578 is a critical-severity vulnerability in Teejay Maypole, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 9.8/10. Published 2026-02-16.
How severe is CVE-2025-15578?: Critical severity. CVSS v3 base score is 9.8 out of 10.