{"schema_version":"1.7.3","id":"GHSA-vgvf-m4fw-938j","published":"2026-03-05T19:48:33Z","modified":"2026-03-23T04:56:07.802341261Z","aliases":["CVE-2026-26195","GO-2026-4618"],"summary":"Gogs: Stored XSS in branch and wiki views through author and committer names","details":"### Summary\n\nStored XSS is still possible through unsafe template rendering that mixes user input with `safe()` plus permissive sanitizer handling of data URLs.\n\n### Details\n\n`safe()` still turns off escaping:\n- internal/template/template.go\n- `func safe(raw string) template.HTML { return template.HTML(raw) }`\n\nBranch pages still render committer names using `safe()`:\n- templates/repo/branches/overview.tmpl\n- templates/repo/branches/all.tmpl\n- templates/repo/wiki/view.tmpl\n\nThe locale still injects a raw second argument: conf/locale/locale_en-US.ini (`branches.updated_by = updated %[1]s by %[2]s`)\n\n### Impact\n\nAn attacker who can inject commit metadata such as author/committer name can trigger script execution on affected pages, leading to session abuse, CSRF token theft, or unauthorized actions.\n\n### Recommended Fix\n\n- Untrusted arguments should be escaped before being used in translations.\n- Data URLs should be limited or blocked in the sanitizer.\n\n### Remediation\nA fix is available at https://github.com/gogs/gogs/releases/tag/v0.14.2.","affected":[{"package":{"name":"gogs.io/gogs","ecosystem":"Go","purl":"pkg:golang/gogs.io/gogs"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.13.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-vgvf-m4fw-938j/GHSA-vgvf-m4fw-938j.json"}}],"references":[{"type":"WEB","url":"https://github.com/gogs/gogs/security/advisories/GHSA-vgvf-m4fw-938j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26195"},{"type":"WEB","url":"https://github.com/gogs/gogs/pull/8176"},{"type":"WEB","url":"https://github.com/gogs/gogs/commit/ac21150a53bef3a3061f4da787ab193a8d68ecfc"},{"type":"PACKAGE","url":"https://github.com/gogs/gogs"},{"type":"WEB","url":"https://github.com/gogs/gogs/releases/tag/v0.14.2"}],"database_specific":{"cwe_ids":["CWE-79"],"github_reviewed":true,"github_reviewed_at":"2026-03-05T19:48:33Z","nvd_published_at":"2026-03-05T19:16:03Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}]}