GHSA-5FHX-9JWJ-867M

Vulnerability from github – Published: 2026-04-16 20:41 – Updated: 2026-04-16 20:41
VLAI?
Summary
Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads
Details

Impact

The ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects.

Patches

  • https://github.com/WeblateOrg/weblate/pull/18550

References

This issue was reported by @spbavarva via GitHub.

Severity ?
5.0 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "weblate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33440"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-16T20:41:59Z",
    "nvd_published_at": "2026-04-15T19:16:35Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn\u0027t restrict possible redirects.\n\n### Patches\n* https://github.com/WeblateOrg/weblate/pull/18550\n\n### References\nThis issue was reported by @spbavarva via GitHub.",
  "id": "GHSA-5fhx-9jwj-867m",
  "modified": "2026-04-16T20:41:59Z",
  "published": "2026-04-16T20:41:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-5fhx-9jwj-867m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33440"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/weblate/pull/18550"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/weblate/commit/8be80625a864c8db5854503872a65e8a0b7399a6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/WeblateOrg/weblate"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads"
}


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