{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82462 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82462 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82462 is a medium-severity authentication bypass vulnerability in pac4j, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82462 and fix it if it is affected.\n\nWhat it is: CVE-2026-82462 is a medium-severity authentication bypass vulnerability in pac4j, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-82462 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-2026-82462/ (Markdown: https://insights.sbomify.com/CVE-2026-82462/index.md)","id":"CVE-2026-82462","markdown":"https://insights.sbomify.com/CVE-2026-82462/index.md","name":"CVE-2026-82462","record":{"aliases":["GHSA-w9jq-4xjw-37gj"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Java OIDC library","requires_auth":"none","summary":"Attackers can bypass authentication in pac4j-oidc by substituting access tokens, creating unauthorized sessions without proper validation.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification.","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 Authentication Bypass via Access Token Substitution","id":"CVE-2026-82462","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-core before 6.5.6 Authorization Bypass via Reversed Profile Type Check","id":"CVE-2026-82463"},"packages":[],"prev":{"headline":"pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token","id":"CVE-2026-82461"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-31","vendors":["pac4j"]},"summary":"Attackers can bypass authentication in pac4j-oidc by substituting access tokens, creating unauthorized sessions without proper validation.","url":"https://insights.sbomify.com/CVE-2026-82462/"}