Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id.
The generate_session_id function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes using SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time. 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.
Amon2::Plugin::Web::CSRFDefender versions before 7.00 were part of Amon2, which was vulnerable to insecure session ids due to CVE-2025-15604.
Note that the author has deprecated this module.
Metrics
Affected Vendors & Products
References
History
Wed, 08 Apr 2026 06:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id. The generate_session_id function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes using SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time. 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. Amon2::Plugin::Web::CSRFDefender versions before 7.00 were part of Amon2, which was vulnerable to insecure session ids due to CVE-2025-15604. Note that the author has deprecated this module. | |
| Title | Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id | |
| Weaknesses | CWE-338 CWE-340 |
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| References |
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Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-04-08T05:48:43.633Z
Reserved: 2026-03-28T19:12:35.387Z
Link: CVE-2026-5082
No data.
Status : Received
Published: 2026-04-08T06:16:28.993
Modified: 2026-04-08T06:16:28.993
Link: CVE-2026-5082
No data.
OpenCVE Enrichment
No data.