CVE-2025-40931
CRITICAL
2026-03-05
9b29abf9-4ab0-4765-b253-1875cd9b441e
9.1
CVSS 3.1
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CVSS Vector
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
Lifecycle Timeline
2
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
CVE Published
Mar 05, 2026 - 02:16 nvd
CRITICAL 9.1
Description
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() function, the epoch time, and the PID. 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.
Analysis
Insecure session ID generation in Apache::Session::Generate::MD5 through 1.94 for Perl.
Technical Context
CWE-338.
Affected Products
['Apache::Session::Generate::MD5 <= 1.94']
Remediation
Update.
Priority Score
46
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +46
POC: 0
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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