{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-63687 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-63687 is a critical vulnerability in Apache Cxf, published on 6 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-2026-63687 and fix it if it is affected.\n\nWhat it is: CVE-2026-63687 is a critical vulnerability in Apache Cxf, published on 6 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-2026-63687 in the wild and no public exploit code.\n\nAffected product: Apache Cxf. 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-2026-63687/ (Markdown: https://insights.sbomify.com/CVE-2026-63687/index.md)","id":"CVE-2026-63687","markdown":"https://insights.sbomify.com/CVE-2026-63687/index.md","name":"CVE-2026-63687","record":{"aliases":["GHSA-7hjx-472h-3f7q"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Java web services library","requires_auth":"none","summary":"Attackers with valid JWTs can override PKCE and nonce parameters, bypassing OpenID Connect replay protection and PKCE integrity checks.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"cxf","vendor":"apache"}],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT (e.g., one whose client_secret is known or compromised) can thereby substitute the code_challenge, code_challenge_method, nonce, and state values that were set in the outer HTTP request, undermining PKCE integrity and OpenID Connect replay protection. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.","ecosystems":[],"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":"Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters","id":"CVE-2026-63687","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"apache:cxf","products":["apache:cxf"],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in Dell Container Storage Modules (CSM)","id":"CVE-2026-63688"},"packages":[],"prev":{"headline":"Apache HTTP Server: mod_xml2enc crash on charset conversion failure","id":"CVE-2026-63686"},"products":["Apache CXF"],"published":"2026-08-06","related":[{"cvss_score":10,"headline":"XML Signature/Encryption Not Validated in Apache CXF","id":"CVE-2012-2379","kev_date_added":null,"published":"2013-01-03"},{"cvss_score":9.8,"headline":"Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage","id":"CVE-2026-66909","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":9.8,"headline":"Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replay","id":"CVE-2026-68079","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":9.8,"headline":"Apache CXF: OAuth2: Inverted IP Binding Check Defeats Security Control","id":"CVE-2026-50628","kev_date_added":null,"published":"2026-06-12"},{"cvss_score":9.8,"headline":"Apache CXF: Untrusted JMS configuration can lead to RCE","id":"CVE-2025-48913","kev_date_added":null,"published":"2025-08-08"},{"cvss_score":9.8,"headline":"Apache CXF SSRF Vulnerability","id":"CVE-2022-46364","kev_date_added":null,"published":"2022-12-13"},{"cvss_score":9.8,"headline":"Potential session hijack in Apache CXF","id":"CVE-2019-12419","kev_date_added":null,"published":"2019-11-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-07","vendors":["Apache Software Foundation"]},"summary":"Attackers with valid JWTs can override PKCE and nonce parameters, bypassing OpenID Connect replay protection and PKCE integrity checks.","url":"https://insights.sbomify.com/CVE-2026-63687/"}