Mealie 3.26.0 through 3.28.0 SSRF via OIDC Picture Claim Avatar Fetch

{
  "id": "2a4fab13a7fd51386ce935bf0df8a9d79d06c0d1ce9c06f663ab2d84b541f866",
  "url": "https://osv.dev/vulnerability/CVE-2026-108594",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Mealie 3.26.0 through 3.28.0 SSRF via OIDC Picture Claim Avatar Fetch",
    "summary": "Mealie 3.26.0 through 3.28.0 contains a server-side request forgery vulnerability in the OpenID Connect avatar fetch that ignores ports when allowlisting the identity provider hostname. Authenticated OIDC users who control their picture URL can make the server send GET requests to arbitrary ports on the provider's internal address on each login.",
    "evidence": "osv:CVE-2026-108594",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-108594",
      "aliases": [
        "CVE-2026-108594"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mealie-recipes/mealie",
              "type": "GIT",
              "events": [
                {
                  "introduced": "84b2677f76069a6fb2bac6e2c633c9dbe7379ce4"
                },
                {
                  "last_affected": "0552eaa4a80031b8572849cca0ed95d07f1be001"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.26.0"
                      },
                      {
                        "last_affected": "3.28.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "3.26.0"
                      },
                      {
                        "last_affected": "3.28.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.28.0",
            "v3.27.0",
            "v3.26.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108594.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.054383515Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108594.json",
        "https://hackmd.io/@haind/mealie-oidc-avatar-ssrf",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108594",
        "https://www.vulncheck.com/advisories/mealie-3.26.0-through-3.28.0-ssrf-via-oidc-picture-claim-avatar-fetch",
        "https://github.com/mealie-recipes/mealie",
        "https://github.com/mealie-recipes/mealie/blob/v3.28.0/mealie/core/security/providers/openid_provider.py#L170-L200",
        "https://github.com/mealie-recipes/mealie/blob/v3.28.0/mealie/pkgs/safehttp/transport.py#L60-L160"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108594.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108594",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488174,
  "published_at": "2026-10-10T18:16:57.811+00:00"
}