{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82461 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82461 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82461 is a high-severity authentication bypass vulnerability in pac4j, published on 29 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82461 and fix it if it is affected.\n\nWhat it is: CVE-2026-82461 is a high-severity authentication bypass vulnerability in pac4j, published on 29 Aug 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-2026-82461 in the wild and no public exploit code.\n\nAffected product: pac4j. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-82461/ (Markdown: https://insights.sbomify.com/CVE-2026-82461/index.md)","id":"CVE-2026-82461","markdown":"https://insights.sbomify.com/CVE-2026-82461/index.md","name":"CVE-2026-82461","record":{"aliases":["GHSA-4w24-77rp-687q"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Java OIDC library","requires_auth":"low_privilege","summary":"Attackers can forge Keycloak access tokens to bypass authorization checks and escalate privileges in applications using pac4j-oidc.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles. Attackers can forge access tokens with administrative roles paired with valid ID tokens to bypass authorization checks in applications relying on pac4j role validation.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token","id":"CVE-2026-82461","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"pac4j-oidc before 6.5.6 Authentication Bypass via Access Token Substitution","id":"CVE-2026-82462"},"packages":[],"prev":{"headline":"Cloud Commander before 19.20.2 Directory Traversal via REST and Markdown","id":"CVE-2026-82460"},"products":["pac4j"],"published":"2026-08-29","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-08-31","vendors":["pac4j"]},"summary":"Attackers can forge Keycloak access tokens to bypass authorization checks and escalate privileges in applications using pac4j-oidc.","url":"https://insights.sbomify.com/CVE-2026-82461/"}