CVEvulnerability
CVE-2026-5087
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-03-31
- Last modified
- 2026-07-24
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-1204, CWE-338
Description
PAGI::Middleware::Session::Store::Cookie versions through 0.001003 for Perl generates random bytes insecurely.
PAGI::Middleware::Session::Store::Cookie attempts to read bytes from the /dev/urandom device directly. If that fails (for example, on systems without the device, such as Windows), then it will emit a warning that recommends the user install Crypt::URandom, and then return a string of random bytes generated by the built-in rand function, which is unsuitable for cryptographic applications.
This modules does not use the Crypt::URandom module, and installing it will not fix the problem.
The random bytes are used for generating an initialisation vector (IV) to encrypt the cookie.
A predictable IV may make it easier for malicious users to decrypt and tamper with the session data that is stored in the cookie.
Affected configurations
• jjnapiork pagi\ \ (<= 0.001003)
Related
References
- https://metacpan.org/release/JJNAPIORK/PAGI-Middleware-Session-Store-Cookie-0.001003/source/lib/PAGI/Middleware/Session/Store/Cookie.pm#L156-173 Broken Link
- https://metacpan.org/release/JJNAPIORK/PAGI-Middleware-Session-Store-Cookie-0.001004/changes Release Notes
- http://www.openwall.com/lists/oss-security/2026/03/31/10 Mailing List, Third Party Advisory