{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-6736 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-6736 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-6736 is a medium-severity authentication bypass vulnerability in Github Enterprise Server, published on 7 May 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-2026-6736 and fix it if it is affected.\n\nWhat it is: CVE-2026-6736 is a medium-severity authentication bypass vulnerability in Github Enterprise Server, published on 7 May 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-2026-6736 in the wild and no public exploit code.\n\nAffected product: Github Enterprise Server. 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-2026-6736/ (Markdown: https://insights.sbomify.com/CVE-2026-6736/index.md)","id":"CVE-2026-6736","markdown":"https://insights.sbomify.com/CVE-2026-6736/index.md","name":"CVE-2026-6736","record":{"aliases":["GHSA-2gcr-p5w4-5hh8"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"GitHub Enterprise Server","requires_auth":"none","summary":"Unauthenticated attackers can create local user accounts bypassing external identity providers on GitHub Enterprise Server instances configured with external authentication.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_P","cpe":[{"product":"enterprise_server","vendor":"github"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signup endpoint did not properly enforce the authentication restriction, allowing account creation and session establishment without identity provider validation. The created account was limited to the default base permissions configured on the instance. Exploitation required network access to a GHES instance configured with an external authentication provider. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Auth bypass in Enterprise Server","id":"CVE-2026-6736","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"github:enterprise_server","products":["github:enterprise_server"],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Missing authorization in AsusPTPFilter","id":"CVE-2026-6737"},"packages":[],"prev":{"headline":"XSS within PHP-FPM status endpoint","id":"CVE-2026-6735"},"products":["Enterprise Server"],"published":"2026-05-07","related":[{"cvss_score":10,"headline":"Auth bypass in Enterprise Server","id":"CVE-2024-4985","kev_date_added":null,"published":"2024-05-20"},{"cvss_score":9.8,"headline":"Missing authorization in GitHub Enterprise Server","id":"CVE-2022-23739","kev_date_added":null,"published":"2023-01-17"},{"cvss_score":9.8,"headline":"Improper Limitation of a Pathname to a Restricted Directory in GitHub Enterprise Server leading to RCE","id":"CVE-2022-46255","kev_date_added":null,"published":"2022-12-14"},{"cvss_score":9.8,"headline":"Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group","id":"CVE-2021-22869","kev_date_added":null,"published":"2021-09-24"},{"cvss_score":9.5,"headline":"Auth bypass in Enterprise Server","id":"CVE-2024-9487","kev_date_added":null,"published":"2024-10-10"},{"cvss_score":9.5,"headline":"Auth bypass in GitHub Enterprise Server","id":"CVE-2024-6800","kev_date_added":null,"published":"2024-08-20"},{"cvss_score":9.3,"headline":"GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery","id":"CVE-2026-77987","kev_date_added":null,"published":"2026-09-22"}],"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":"2026-05-08","vendors":["GitHub"]},"summary":"Unauthenticated attackers can create local user accounts bypassing external identity providers on GitHub Enterprise Server instances configured with external authentication.","url":"https://insights.sbomify.com/CVE-2026-6736/"}