CVE-2018-1000165: Lightsaml

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

LightSAML version prior to 1.3.5 contains a Incorrect Access Control vulnerability in signature validation in readers in src/LightSaml/Model/XmlDSig/ that can result in impersonation of any user from Identity Provider. This vulnerability appears to have been fixed in 1.3.5 and later.

Affected products

• Lightsaml Lightsaml: before 1.3.5 (fixed in 1.3.5)

Published 2018-04-18. Last modified 2026-06-17.