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CVE-2025-40933

Date: September 17, 2025

Apache::AuthAny::Cookie v0.201 or earlier for Perl generates session ids insecurely. Session ids are generated using an MD5 hash of the epoch time and a call to the built-in rand function. 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.

Severity Score

Related Resources (3)

https://nvd.nist.gov/vuln/detail/CVE-2025-40933
https://metacpan.org/release/KGOLDOV/Apache2-AuthAny-0.201/source/lib/Apache2/AuthAny/Cookie.pm
https://www.mend.io/vulnerability-database/CVE-2025-40933

Severity Score

Weakness Type (CWE)

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

CWE-338

Generation of Predictable Numbers or Identifiers

CWE-340

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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