CVE-2025-40925
CRITICAL EPSS 25.4%
Published Sep 20, 20259mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Published Sep 20, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
25.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-338
CWE-340
References 3
- github.com https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch
- github.com https://github.com/bluefeet/Starch/pull/5
- metacpan.org https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.