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GHSA-V8F2-2GHQ-9WHV

Vulnerability from github – Published: 2026-07-03 21:31 – Updated: 2026-09-01 17:23
VLAI
Summary
Gitea forwarded-proto validation allows canonical URL spoofing
Details

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.

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



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