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CVE-2026-76835: oauth2-proxy 7.15.2 through 7.15.4
CVE-2026-76835. CVSS 3.1 base score 9.1 (CRITICAL, Vendor/CNA). EPSS 0.00453 (percentile 0.37238), scored 2026-10-06.
Affected technology
oauth2-proxy · 7.15.2 through 7.15.4
oauth2-proxy
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
An unauthenticated attacker can request a protected upstream path while setting X-Forwarded-Uri to a value matching an allow-listed route, so the skip-auth decision is made against the spoofed value while the upstream receives the protected path unchanged. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality and integrity impact as high; availability impact as none.
- CWE
- CWE-290
- CCR priority
- 36.5 /100 (P4)
- CVSS 3.1
- 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · Vendor/CNA
- EPSS
- 0.00453 · percentile 0.37341 · 2026-10-08
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-76835.html