{"answers":{"affected":"3 open source packages ship an affected version, including github.com/ory/oathkeeper. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33496 in the wild and no public exploit code.","fix":"Upgrade github.com/ory/oathkeeper to 0.40.10-0.20260320084801-198a2bc82a99 or later.","what":"CVE-2026-33496 is a high-severity authentication bypass vulnerability in ory oathkeeper, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33496 and fix it if it is affected.\n\nWhat it is: CVE-2026-33496 is a high-severity authentication bypass vulnerability in ory oathkeeper, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-33496 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ory/oathkeeper (Go): affected all versions; fixed in 0.40.10-0.20260320084801-198a2bc82a99\n- github.com/ory/oathkeeper (Go): affected all versions; fixed in 0.40.10-0.20260320084801-198a2bc82a99\n- github.com/ory/oathkeeper (Go): affected all versions; fixed in 0.40.10-0.20260320084801-198a2bc82a99\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-33496/ (Markdown: https://insights.sbomify.com/CVE-2026-33496/index.md)","id":"CVE-2026-33496","markdown":"https://insights.sbomify.com/CVE-2026-33496/index.md","name":"CVE-2026-33496","record":{"aliases":["GHSA-4mq7-pvjg-xp2r","GO-2026-4799"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Identity Access Proxy","requires_auth":"low_privilege","summary":"Attackers can bypass authentication in Ory Oathkeeper by exploiting cache key confusion when multiple introspection servers are configured with caching enabled.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"oathkeeper","vendor":"ory"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-305","name":"Authentication Bypass by Primary Weakness"},{"id":"CWE-1289","name":"Improper Validation of Unsafe Equivalence in Input"}],"description":"ORY Oathkeeper is an Identity \u0026 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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Ory Oathkeeper has an authentication bypass by cache key confusion","id":"CVE-2026-33496","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading","id":"CVE-2026-33497"},"packages":[{"ecosystem":"Go","fixed":["0.40.10-0.20260320084801-198a2bc82a99"],"introduced":["0"],"last_affected":[],"package":"github.com/ory/oathkeeper","purl":null,"source":"GHSA-4mq7-pvjg-xp2r"},{"ecosystem":"Go","fixed":["0.40.10-0.20260320084801-198a2bc82a99"],"introduced":["0"],"last_affected":[],"package":"github.com/ory/oathkeeper","purl":"pkg:golang/github.com/ory/oathkeeper","source":"GHSA-4mq7-pvjg-xp2r"},{"ecosystem":"Go","fixed":["0.40.10-0.20260320084801-198a2bc82a99"],"introduced":["0"],"last_affected":[],"package":"github.com/ory/oathkeeper","purl":"pkg:golang/github.com/ory/oathkeeper","source":"GO-2026-4799"}],"prev":{"headline":"Ory Oathkeeper has an authentication bypass by usage of untrusted header","id":"CVE-2026-33495"},"products":["oathkeeper"],"published":"2026-03-26","related":[{"cvss_score":10,"headline":"Ory Oathkeeper has a path traversal authorization bypass","id":"CVE-2026-33494","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":7.5,"headline":"Possible bypass of token claim validation when OAuth2 Introspection caching is enabled","id":"CVE-2021-32701","kev_date_added":null,"published":"2021-06-22"},{"cvss_score":6.5,"headline":"Ory Oathkeeper has an authentication bypass by usage of untrusted header","id":"CVE-2026-33495","kev_date_added":null,"published":"2026-03-26"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-30","vendors":["ory"]},"summary":"Attackers can bypass authentication in Ory Oathkeeper by exploiting cache key confusion when multiple introspection servers are configured with caching enabled.","url":"https://insights.sbomify.com/CVE-2026-33496/"}