{"answers":{"affected":"2 open source packages ship an affected version, including Auth0.AuthenticationApi. It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-16929 in the wild and no public exploit code.","fix":"Upgrade Auth0.AuthenticationApi to 6.5.4 or later.","what":"CVE-2019-16929 is a high-severity authentication bypass vulnerability in n/a, published on 8 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-16929 and fix it if it is affected.\n\nWhat it is: CVE-2019-16929 is a high-severity authentication bypass vulnerability in n/a, published on 8 Oct 2019. 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-2019-16929 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Auth0.AuthenticationApi (NuGet): affected from 5.8.0; fixed in 6.5.4\n- Auth0.AuthenticationApi (NuGet): affected from 5.8.0; fixed in 6.5.4\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-2019-16929/ (Markdown: https://insights.sbomify.com/CVE-2019-16929/index.md)","id":"CVE-2019-16929","markdown":"https://insights.sbomify.com/CVE-2019-16929/index.md","name":"CVE-2019-16929","record":{"aliases":["GHSA-c9cg-q8r2-xvjq"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Auth0 .NET SDK","requires_auth":"none","summary":"Attackers can bypass authentication by exploiting incorrect access control in the IdentityTokenValidator of the Auth0 .NET SDK.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"auth0.net","vendor":"auth0"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Auth0 auth0.net before 6.5.4 has Incorrect Access Control because IdentityTokenValidator can be accidentally used to validate untrusted ID tokens.","ecosystems":["NuGet"],"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":"Improper Authentication in Auth0.AuthenticationApi","id":"CVE-2019-16929","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"auth_bypass","year":"2019"},"n_packages":2,"n_references":1,"next":{"headline":"Information disclosure in n/a","id":"CVE-2019-16930"},"packages":[{"ecosystem":"NuGet","fixed":["6.5.4"],"introduced":["5.8.0"],"last_affected":[],"package":"Auth0.AuthenticationApi","purl":null,"source":"GHSA-c9cg-q8r2-xvjq"},{"ecosystem":"NuGet","fixed":["6.5.4"],"introduced":["5.8.0"],"last_affected":[],"package":"Auth0.AuthenticationApi","purl":"pkg:nuget/Auth0.AuthenticationApi","source":"GHSA-c9cg-q8r2-xvjq"}],"prev":{"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928"},"products":["n/a"],"published":"2019-10-08","related":[],"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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can bypass authentication by exploiting incorrect access control in the IdentityTokenValidator of the Auth0 .NET SDK.","url":"https://insights.sbomify.com/CVE-2019-16929/"}