CVE-2026-105118CWE-347

CVE-2026-105118

Medium · published October 3, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
0.8
In the wild
Unconfirmed
What it is

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified id_token_hint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered post-logout URI, enabling phishing that borrows the OpenAM host's trust.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
2.3 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00100 · 0.8th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-10-03T18:16Z
References (2)
https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-6f8c-crwq-jqm3 · [email protected]https://www.vulncheck.com/advisories/openam-before-16.1.3-open-redirect-via-unverified-id-token-hint-in-endsession · [email protected]
EPSS history
Timeline
  • 07 OCT 03:39Z
    EPSS moved — → 0%
    epss
  • 03 OCT 12:14Z
    OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession
    cvelistv5