Payload: Bypassed sanitization of user uploaded SVGs

{
  "id": "924f912bb8a8cf1a520d1ed236db17bc06370a8bae1172aa96a015181ed5c9be",
  "url": "https://osv.dev/vulnerability/GHSA-2pwp-2369-8fg3",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Payload: Bypassed sanitization of user uploaded SVGs",
    "summary": "## Impact A malicious SVG file upload could bypass sanitization, be stored, and execute attacker-controlled JavaScript (XSS) after a user downloads it and opens it. **You are affected if:** - You have a collection configured to upload and allow SVG files which can then be downloaded by users. ## Patches The fix validates SVG content on every upload path and hardens SVG/XML delivery so stored SVGs cannot frame attacker content. Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`. ## Workarounds Disallow SVG uploads, or serve uploaded SVGs as downloads with Content-Disposition: attachment and a strict CSP. These mitigations reduce exposure but do not replace upgrading when the patched release is available.",
    "evidence": "osv:GHSA-2pwp-2369-8fg3",
    "products": [
      {
        "name": {
          "value": "payload",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.90.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "payload",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.0.0-canary.34",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "GHSA-2pwp-2369-8fg3",
      "aliases": [
        "CVE-2026-105862",
        "GHSA-2pwp-2369-8fg3"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.90.0"
                }
              ]
            }
          ],
          "package": {
            "name": "payload",
            "purl": "pkg:npm/payload",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-2pwp-2369-8fg3/GHSA-2pwp-2369-8fg3.json"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "4.0.0-canary.0"
                },
                {
                  "fixed": "4.0.0-canary.34"
                }
              ]
            }
          ],
          "package": {
            "name": "payload",
            "purl": "pkg:npm/payload",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-2pwp-2369-8fg3/GHSA-2pwp-2369-8fg3.json"
          }
        }
      ],
      "modified": "2026-10-07T20:45:04.330367856Z",
      "provider": "osv",
      "references": [
        "https://github.com/payloadcms/payload/security/advisories/GHSA-2pwp-2369-8fg3",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-105862",
        "https://github.com/payloadcms/payload/commit/a8c3a8e8e2680c96ec4f66f5b3854c5df6c35adf",
        "https://github.com/payloadcms/payload",
        "https://github.com/payloadcms/payload/releases/tag/v3.90.0"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-434",
          "CWE-79"
        ],
        "severity": "HIGH",
        "github_reviewed": true,
        "nvd_published_at": "2026-10-06T17:17:22Z",
        "github_reviewed_at": "2026-10-07T20:29:36Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-105862",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 97255,
  "published_at": "2026-10-07T20:29:36+00:00"
}