VULNERABILITY INTELLIGENCE
CVE-2025-40925
CVSS score9.1 CRITICAL
EPSS probability0.36%
CISA KEVNot currently listed
Published2025-09-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
Starch versions 0.14 and earlier generate session ids insecurely. The default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems.
Weakness classification
- 9b29abf9-4ab0-4765-b253-1875cd9b441e: CWE-338