CVE-2018-1000165

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-18 · updated 2026-06-17
Weakness: CWE-732

Description

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: before 1.3.5 — fixed in 1.3.5

How to fix

Upgrade to a fixed version: Lightsaml 1.3.5. Check the vendor advisory for mitigations.

References

https://github.com/lightSAML/lightSAML/commit/47cef07bb09779df15620799f3763d1b8d32307a
https://github.com/lightSAML/lightSAML/releases/tag/1.3.5
https://github.com/lightSAML/lightSAML/commit/47cef07bb09779df15620799f3763d1b8d32307a
https://github.com/lightSAML/lightSAML/releases/tag/1.3.5

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