{"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-2026-20779 exists.","fix":"Upgrade code.gitea.io/gitea to 1.26.3 or later.","what":"CVE-2026-20779 is a high-severity authentication bypass vulnerability in Gitea Open Source Git Server, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-20779 and fix it if it is affected.\n\nWhat it is: CVE-2026-20779 is a high-severity authentication bypass vulnerability in Gitea Open Source Git Server, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-20779 exists.\n\nAffected packages and fixed versions:\n- code.gitea.io/gitea (Go): affected from 1.5.0; fixed in 1.26.3\n- code.gitea.io/gitea (Go): affected from 1.5.0; fixed in 1.26.3\n- code.gitea.io/gitea (Go): affected from 1.5.0; fixed in 1.26.3\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-2026-20779/ (Markdown: https://insights.sbomify.com/CVE-2026-20779/index.md)","id":"CVE-2026-20779","markdown":"https://insights.sbomify.com/CVE-2026-20779/index.md","name":"CVE-2026-20779","record":{"aliases":["GHSA-gx3v-q759-g323","GO-2026-6057"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Gitea Git Server","requires_auth":"none","summary":"Attackers can replay valid TOTP codes to bypass two-factor authentication and take over user accounts in Gitea.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Gitea","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-294","name":"Authentication Bypass by Capture-replay"}],"description":"Gitea versions from 1.5.0 before 1.26.3 have a TOTP single-use enforcement defect that allows a valid TOTP code to be accepted more than once across web two-factor authentication flows and the Basic Auth X-Gitea-OTP path.","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":"Gitea TOTP single-use enforcement defect allows OTP replay","id":"CVE-2026-20779","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Denial of service in Intel(R) PROSet/Wireless WiFi Software for Windows","id":"CVE-2026-20780"},"packages":[{"ecosystem":"Go","fixed":["1.26.3"],"introduced":["1.5.0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":null,"source":"GHSA-gx3v-q759-g323"},{"ecosystem":"Go","fixed":["1.26.3"],"introduced":["1.5.0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GHSA-gx3v-q759-g323"},{"ecosystem":"Go","fixed":["1.26.3"],"introduced":["1.5.0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GO-2026-6057"}],"prev":{"headline":"Denial of service in Intel(R) PROSet/Wireless WiFi Software for Windows","id":"CVE-2026-20778"},"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-07","vendors":["Gitea"]},"summary":"Attackers can replay valid TOTP codes to bypass two-factor authentication and take over user accounts in Gitea.","url":"https://insights.sbomify.com/CVE-2026-20779/"}