{
"id": "GHSA-vhq7-fwwh-7hjf",
"aliases": [
"CVE-2026-27780"
],
"details": "Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.",
"summary": "Gitea pre-receive hook scanner errors allow branch-protection bypass",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.26.0"
}
]
}
],
"package": {
"name": "code.gitea.io/gitea",
"ecosystem": "Go"
}
}
],
"modified": "2026-09-01T18:55:25Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2026-07-03T21:31:38Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27780",
"type": "ADVISORY"
},
{
"url": "https://github.com/go-gitea/gitea/pull/36963",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea/commit/c453d09c36fad094405314dba2f370434b200711",
"type": "WEB"
},
{
"url": "https://blog.gitea.com/release-of-1.26.0",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea",
"type": "PACKAGE"
},
{
"url": "https://github.com/go-gitea/gitea/releases/tag/v1.26.0",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-863"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2026-07-03T21:16:59Z",
"github_reviewed_at": "2026-09-01T18:55:25Z"
}
}