CVE-2026-5083

low-risk

Published 2026-04-08

Ado::Sessions versions through 0.935 for Perl generates insecure session ids. The session id is generated from 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. Predicable session ids could allow an attacker to gain access to systems. Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Ado\

Affected Vendors

Berov

References (4)

Product https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz

Issue Tracking https://github.com/kberov/Ado/issues/112

Third Party Advisory https://security.metacpan.org/docs/guides/random-data-for-security.html

Mailing List http://www.openwall.com/lists/oss-security/2026/04/08/7

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low-risk

Severity 21/34 · High

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal