{"answers":{"affected":"4 open source packages ship an affected version, including github.com/go-gitea/gitea, gitea and code.gitea.io/gitea. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-20888 in the wild and no public exploit code.","fix":"Upgrade github.com/go-gitea/gitea to 1.25.4 or later.","what":"CVE-2026-20888 is a medium-severity missing authorization vulnerability in Gitea Gitea, published on 22 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-20888 and fix it if it is affected.\n\nWhat it is: CVE-2026-20888 is a medium-severity missing authorization vulnerability in Gitea Gitea, published on 22 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-20888 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/go-gitea/gitea (Go): affected all versions; fixed in 1.25.4\n- github.com/go-gitea/gitea (Go): affected all versions; fixed in 1.25.4\n- gitea (Bitnami): affected all versions; fixed in 1.25.4\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.25.4\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-2026-20888/ (Markdown: https://insights.sbomify.com/CVE-2026-20888/index.md)","id":"CVE-2026-20888","markdown":"https://insights.sbomify.com/CVE-2026-20888/index.md","name":"CVE-2026-20888","record":{"aliases":["BIT-gitea-2026-20888","GHSA-9cgq-wp42-4rpq","GHSA-ccq9-c5hv-cf64","GO-2026-4366"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Gitea Git Server","requires_auth":"low_privilege","summary":"Read-only users can cancel scheduled auto-merges on pull requests they do not own, bypassing authorization checks in Gitea.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Gitea","cpe":[{"product":"gitea","vendor":"gitea"}],"cvss":{"score":4.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Gitea does not properly verify authorization when canceling scheduled auto-merges via the web interface. A user with read access to pull requests may be able to cancel auto-merges scheduled by other users.","ecosystems":["Bitnami","Go"],"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":"Gitea Pull Requests Auto-Merge: Read-Only Users Can Cancel Scheduled Auto-Merge via Web Endpoint (Authorization Bypass)","id":"CVE-2026-20888","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"gitea:gitea","products":["gitea:gitea"],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Memory corruption in LibRaw","id":"CVE-2026-20889"},"packages":[{"ecosystem":"Bitnami","fixed":["1.25.4"],"introduced":["0"],"last_affected":[],"package":"gitea","purl":"pkg:bitnami/gitea","source":"BIT-gitea-2026-20888"},{"ecosystem":"Go","fixed":["1.25.4"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GO-2026-4366"},{"ecosystem":"Go","fixed":["1.25.4"],"introduced":["0"],"last_affected":[],"package":"github.com/go-gitea/gitea","purl":null,"source":"GHSA-9cgq-wp42-4rpq"},{"ecosystem":"Go","fixed":["1.25.4"],"introduced":["0"],"last_affected":[],"package":"github.com/go-gitea/gitea","purl":"pkg:golang/github.com/go-gitea/gitea","source":"GHSA-9cgq-wp42-4rpq"}],"prev":{"headline":"Missing authorization in Intel Vision software","id":"CVE-2026-20887"},"products":["Gitea Open Source Git Server"],"published":"2026-01-22","related":[{"cvss_score":9.8,"headline":"Gitea Code Injection","id":"CVE-2026-60004","kev_date_added":"2026-08-25","published":"2026-08-26"},{"cvss_score":9.8,"headline":"Gitea WebAuthn bypass during OAuth and OIDC sign-in","id":"CVE-2026-73278","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Gitea fork workflow approval bypass through maintainer-triggered events","id":"CVE-2026-94205","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Gitea vulnerable to Argument Injection","id":"CVE-2022-42968","kev_date_added":null,"published":"2022-10-16"},{"cvss_score":9.8,"headline":"Improper Privilege Management in Gitea","id":"CVE-2021-45330","kev_date_added":null,"published":"2022-02-09"},{"cvss_score":9.8,"headline":"Reuse of one time passwords allowed in Gitea","id":"CVE-2021-45331","kev_date_added":null,"published":"2022-02-09"},{"cvss_score":9.8,"headline":"Capture-replay in Gitea","id":"CVE-2021-45327","kev_date_added":null,"published":"2022-02-08"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"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":"2026-01-23","vendors":["Gitea"]},"summary":"Read-only users can cancel scheduled auto-merges on pull requests they do not own, bypassing authorization checks in Gitea.","url":"https://insights.sbomify.com/CVE-2026-20888/"}