{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-23928 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-23928 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-23928 is a medium-severity authentication bypass vulnerability in ulrikstrid reason-jose, published on 1 Feb 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-23928 and fix it if it is affected.\n\nWhat it is: CVE-2023-23928 is a medium-severity authentication bypass vulnerability in ulrikstrid reason-jose, published on 1 Feb 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-23928 in the wild and no public exploit code.\n\nAffected product: ulrikstrid reason-jose. 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-2023-23928/ (Markdown: https://insights.sbomify.com/CVE-2023-23928/index.md)","id":"CVE-2023-23928","markdown":"https://insights.sbomify.com/CVE-2023-23928/index.md","name":"CVE-2023-23928","record":{"aliases":["GHSA-7jj9-6qwv-wpm7"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JOSE library","requires_auth":"low_privilege","summary":"Attackers can bypass authentication and escalate privileges by tampering with JWS tokens due to missing signature validation in the reason-jose library.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"reason-jose","vendor":"reason-jose_project"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"reason-jose is a JOSE implementation in ReasonML and OCaml.`Jose.Jws.validate` does not check HS256 signatures. This allows tampering of JWS header and payload data if the service does not perform additional checks. Such tampering could expose applications using reason-jose to authorization bypass. Applications relying on JWS claims assertion to enforce security boundaries may be vulnerable to privilege escalation. This issue has been patched in version 0.8.2.","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":"reason-jose ignores signature checks","id":"CVE-2023-23928","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"Refresh tokens do not expire in Vantage6","id":"CVE-2023-23929"},"packages":[],"prev":{"headline":"Craft CMS stored cross-site scripting vulnerability","id":"CVE-2023-23927"},"products":["reason-jose"],"published":"2023-02-01","related":[],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-03-10","vendors":["ulrikstrid"]},"summary":"Attackers can bypass authentication and escalate privileges by tampering with JWS tokens due to missing signature validation in the reason-jose library.","url":"https://insights.sbomify.com/CVE-2023-23928/"}