CVE-2026-90452CWE-295

CVE-2026-90452

Medium · published September 12, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
0.7
In the wild
Unconfirmed
What it is

Requests from the reverse proxy to the identity-provider service for token discovery, introspection, and credential exchange do not verify the identity provider's server certificate. An attacker positioned on the network path between the proxy and the identity provider could impersonate the identity provider and issue forged authentication tokens accepted by the deployment.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
6.0 · CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00098 · 0.7th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-09-12T02:16Z
References (2)
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json · [email protected]https://www.cisa.gov/news-events/ics-advisories/icsa-26-254-01 · [email protected]
EPSS history
Timeline
  • 13 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 11 SEP 21:51Z
    Requests from the reverse proxy to the identity-provider service for token discovery, introspection, and credential exchange do not verify the identity…
    cvelistv5