{
"id": "GHSA-v8f2-2ghq-9whv",
"aliases": [
"CVE-2026-27779"
],
"details": "Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.",
"summary": "Gitea forwarded-proto validation allows canonical URL spoofing",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.25.5"
}
]
}
],
"package": {
"name": "code.gitea.io/gitea",
"ecosystem": "Go"
}
}
],
"modified": "2026-09-01T17:23:55Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-07-03T21:31:38Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27779",
"type": "ADVISORY"
},
{
"url": "https://github.com/go-gitea/gitea/pull/36810",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea/pull/36836",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea/commit/723ce3579f96e75fd12514283023a051a1432b1b",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea/commit/e2517e0fa93177ef6947245eaeab543c95ef18ff",
"type": "WEB"
},
{
"url": "https://blog.gitea.com/release-of-1.25.5",
"type": "WEB"
},
{
"url": "https://github.com/go-gitea/gitea",
"type": "PACKAGE"
},
{
"url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.5",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-284"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-07-03T21:16:59Z",
"github_reviewed_at": "2026-09-01T17:23:55Z"
}
}