CVE-2026-105119CWE-285

CVE-2026-105119

Medium · published October 3, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
8.8
In the wild
Unconfirmed
What it is

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose response_type is exactly code, so codes issued through OpenID Connect hybrid flows (code token, code id_token, code token id_token) carry no bound challenge. An attacker who intercepts such a code can redeem it for a public client's tokens with any non-empty code_verifier.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00196 · 8.8th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-10-03T18:16Z
References (2)
https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-5p2f-7vcr-6vfh · [email protected]https://www.vulncheck.com/advisories/openam-before-16.1.3-pkce-enforcement-bypass-via-oauth-2.0-hybrid-flows · [email protected]
EPSS history
Timeline
  • 07 OCT 03:39Z
    EPSS moved — → 0%
    epss
  • 03 OCT 12:14Z
    OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 Hybrid Flows
    cvelistv5