CVE-2026-3255
Essential information
- Published
- 27/02/2026 20:21
- Modified
- 28/02/2026 01:16
- Author
- —
- Creator
- —
- CISA KEV
- No
- CWE
- —
- CVSS vector
- — — —
Description
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.
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| perl / http | cpe:2.3:a:perl:http::session2:<1.12:*:*:*:*:*:*:* |