CVE-2026-69092: Admidio before 5.0.11 Reflected XSS via SSO/SAML Endpoint

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-03 · updated 2026-09-09
Weakness: CWE-79

Description

Admidio versions before 5.0.11 contain a reflected cross-site scripting vulnerability in the SSO/SAML endpoint that echoes unencoded exception messages to the HTTP response. Unauthenticated attackers can inject arbitrary JavaScript through SAML Issuer elements or LightSaml library parameters to execute code in users' browsers and hijack sessions.

Affected products

admidio: before 5.0.11 — fixed in 5.0.11

How to fix

Upgrade to a fixed version: admidio 5.0.11. Check the vendor advisory for mitigations.

References

https://github.com/Admidio/admidio/security/advisories/GHSA-7jxv-38f3-6xgf
https://www.vulncheck.com/advisories/admidio-before-reflected-xss-via-sso-saml-endpoint
https://github.com/Admidio/admidio/security/advisories/GHSA-7jxv-38f3-6xgf

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