CVE-2016-3735

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-28 · updated 2026-06-17
Weakness: CWE-335

Description

Piwigo is image gallery software written in PHP. When a criteria is not met on a host, piwigo defaults to usingmt_rand in order to generate password reset tokens. mt_rand output can be predicted after recovering the seed used to generate it. This low an unauthenticated attacker to take over an account providing they know an administrators email address in order to be able to request password reset.

Affected products

Piwigo: before 2.8.1 — fixed in 2.8.1

How to fix

Upgrade to a fixed version: Piwigo 2.8.1. Check the vendor advisory for mitigations.

References

http://piwigo.org/release-2.8.1%2C
https://github.com/Piwigo/Piwigo/commit/f51ee90c66527fd7ff634f3e8d414cb670da068d
https://github.com/Piwigo/Piwigo/issues/470%2C
http://piwigo.org/release-2.8.1%2C
https://github.com/Piwigo/Piwigo/commit/f51ee90c66527fd7ff634f3e8d414cb670da068d
https://github.com/Piwigo/Piwigo/issues/470%2C

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