{"id":"CVE-2026-46556","summary":"FlaskBB: SSRF in get_image_info() via unrestricted avatar URL","details":"FlaskBB is a Forum Software written in Python using the micro framework Flask. Prior to version 2.2.1, a Server-Side Request Forgery (SSRF) vulnerability in get_image_info() allows any authenticated user to force the server to send HTTP requests to arbitrary internal endpoints, including cloud metadata services. This is a blind SSRF with confirmed internal port scanning and internal API triggering capabilities. Version 2.2.1 patches the issue.","aliases":["GHSA-xq32-9g7q-7297","PYSEC-2026-2479"],"modified":"2026-07-25T03:56:14.000612363Z","published":"2026-07-21T20:34:23.536Z","database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46556.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46556.json"},{"type":"ADVISORY","url":"https://github.com/flaskbb/flaskbb/security/advisories/GHSA-xq32-9g7q-7297"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46556"},{"type":"FIX","url":"https://github.com/flaskbb/flaskbb/commit/e87e585f54bbe36694e91d52ee9b2d2e65dd4ab5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flaskbb/flaskbb","events":[{"introduced":"0"},{"fixed":"e87e585f54bbe36694e91d52ee9b2d2e65dd4ab5"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.2.1"}]}}],"versions":["v2.2.0","v2.1.0","v2.0.0","v1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46556.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}