CVE-2026-3255 : faille moyenne tokuhirom http\ (CVSS 6.5)

HTTP::Session2 versions before 1.12 for Perl for Perl may generate weak session ids using the rand() function. The HTTP::Session2 session id generator returns a SHA-1 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. HTTP::Session2 after version 1.02 will attempt to use the /dev/urandom device to generate a session id, but if the device is unavailable (for example, under Windows), then it will revert to the insecure method described above.

Sévérité

Moyenne (CVSS 6.5)

Vecteur CVSS

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Exploitation active

Non signalée par la CISA

Publication

27 févr. 2026

Dernière mise à jour

17 juin 2026

• tokuhirom http\

• Fiche CVE-2026-3255 sur le NVD (NIST)
• github.com/tokuhirom/HTTP…
• metacpan.org/release/TOKUHIROM/HTTP…
• metacpan.org/release/TOKUHIROM/HTTP…
• metacpan.org/release/TOKUHIROM/HTTP-Session2-1.12/changes
• openwall.com/lists/oss-security/2026/02/27/12