{"answers":{"affected":"3 open source packages ship an affected version, including code.gitea.io/gitea.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58421 exists.","fix":"Upgrade code.gitea.io/gitea to 1.26.4 or later.","what":"CVE-2026-58421 is a high-severity denial of service vulnerability in Gitea Open Source Git Server, published on 3 Jul 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-2026-58421 and fix it if it is affected.\n\nWhat it is: CVE-2026-58421 is a high-severity denial of service vulnerability in Gitea Open Source Git Server, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58421 exists.\n\nAffected packages and fixed versions:\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.26.4\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.26.4\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.26.4\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-2026-58421/ (Markdown: https://insights.sbomify.com/CVE-2026-58421/index.md)","id":"CVE-2026-58421","markdown":"https://insights.sbomify.com/CVE-2026-58421/index.md","name":"CVE-2026-58421","record":{"aliases":["GHSA-v96j-25gv-g2w9","GO-2026-6077"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Gitea Git Server","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service in Gitea by exploiting ReDoS vulnerabilities in CODEOWNERS pattern matching.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Gitea","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Unauthenticated ReDoS via CODEOWNERS pattern matching allows denial of service","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Unauthenticated ReDoS via CODEOWNERS pattern matching allows denial of service","id":"CVE-2026-58421","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Improper authorization on OAuth sign-in callback silently re-enables administrator-disabled accounts","id":"CVE-2026-58422"},"packages":[{"ecosystem":"Go","fixed":["1.26.4"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":null,"source":"GHSA-v96j-25gv-g2w9"},{"ecosystem":"Go","fixed":["1.26.4"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GHSA-v96j-25gv-g2w9"},{"ecosystem":"Go","fixed":["1.26.4"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GO-2026-6077"}],"prev":{"headline":"Local File Inclusion via file:// URI in Migration Restore","id":"CVE-2026-58420"},"products":["Gitea Open Source Git Server"],"published":"2026-07-03","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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-06","vendors":["Gitea"]},"summary":"Unauthenticated attackers can cause denial of service in Gitea by exploiting ReDoS vulnerabilities in CODEOWNERS pattern matching.","url":"https://insights.sbomify.com/CVE-2026-58421/"}