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CVE-2026-33496— Ory Oathkeeper has an authentication bypass by cache key confusion

Quick assessment

Affected
ory oathkeeper
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ory Oathkeeper是Ory开源的一个访问控制决策软件。 Ory Oathkeeper 26.2.0之前版本存在安全漏洞，该漏洞源于oauth2_introspection身份验证器缓存键混淆，可能导致身份验证绕过。

CVSS 8.1 · High EPSS 0.51% · P42
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I. Basic Information for CVE-2026-33496

Vulnerability Information
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Vulnerability Title
Ory Oathkeeper has an authentication bypass by cache key confusion
Source: CVE Program / CVE List V5
Vulnerability Description
ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The `oauth2_introspection` authenticator cache does not distinguish tokens that were validated with different introspection URLs. An attacker can therefore legitimately use a token to prime the cache, and subsequently use the same token for rules that use a different introspection server. Ory Oathkeeper has to be configured with multiple `oauth2_introspection` authenticator servers, each accepting different tokens. The authenticators also must be configured to use caching. An attacker has to have a way to gain a valid token for one of the configured introspection servers. Starting in version 26.2.0, Ory Oathkeeper includes the introspection server URL in the cache key, preventing confusion of tokens. Update to the patched version of Ory Oathkeeper. If that is not immediately possible, disable caching for `oauth2_introspection` authenticators.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1289
Source: CVE Program / CVE List V5
Vulnerability Title
Ory Oathkeeper 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ory Oathkeeper是Ory开源的一个访问控制决策软件。 Ory Oathkeeper 26.2.0之前版本存在安全漏洞，该漏洞源于oauth2_introspection身份验证器缓存键混淆，可能导致身份验证绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ory oathkeeper < 26.2.0 -

II. Public POCs for CVE-2026-33496

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11593 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-33496

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Patches & Fixes for CVE-2026-33496 (1)

Vendor Advisories for CVE-2026-33496 (1)

Same Patch Batch · ory · 2026-03-26 · 7 CVEs total

CVE-2026-33494 10.0 CRITICAL Ory Oathkeeper has a path traversal authorization bypass
CVE-2026-33506 8.8 HIGH DOM-Based XSS in Ory Polis Login Page
CVE-2026-33503 7.2 HIGH Ory Kratos has a SQL injection via forged pagination tokens
CVE-2026-33504 7.2 HIGH Ory Hydra has a SQL injection via forged pagination tokens
CVE-2026-33505 7.2 HIGH Ory Keto has a SQL injection via forged pagination tokens
CVE-2026-33495 6.5 MEDIUM Ory Oathkeeper has an authentication bypass by usage of untrusted header

IV. Related Vulnerabilities

Same product: oathkeeper
Same vendor: ory
Same weakness: CWE-1289

V. Comments for CVE-2026-33496

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