{"id":"CVE-2025-47936","aliases":["GHSA-p4xx-m758-3hpx"],"url":"https://o3.security/vulnerability/CVE-2025-47936","summary":"TYPO3 Vulnerable to Server Side Request Forgery via Webhooks","details":"### Problem\nWebhooks are inherently vulnerable to Server-Side Request Forgery (SSRF), which can be exploited by adversaries to target internal resources (e.g., _localhost_ or other services on the local network). While this is not a vulnerability in TYPO3 itself, it may enable attackers to blindly access systems that would otherwise be inaccessible. An administrator-level backend user account is required to exploit this vulnerability.\n\n### Solution\nUpdate to TYPO3 versions 12.4.31 LTS, 13.4.12 LTS that fix the problem described.\n\n> [!IMPORTANT]\n>\n> **Manual actions required**\n>\n> To mitigate potential SSRF risks via webhooks, it is recommended to explicitly allow access only to trusted hosts. This can be achieved by configuring the allowlist in `$GLOBALS['TYPO3_CONF_VARS']['HTTP']['allowed_hosts']['webhooks']`.\n> \n> If the allowlist is not defined or set to `null`, all requests will be allowed.\n> If the allowlist is an empty `array`, all requests will be blocked.\n> \n> By default, the factory setting allows all requests. This prevents existing webhooks from failing after upgrading to the affected TYPO3 versions. Administrators must configure this setting manually to enforce restrictions.\n\n\n### Credits\nThanks to the National Cyber Security Center (NCSC) of Switzerland for reporting this issue, and to TYPO3 core & security team member Benjamin Franzke for fixing it.","published":"2025-05-20T13:23:52.952Z","modified":"2026-08-27T03:31:04.086924289Z","cvss":{"score":3.3,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L"},"epss":{"score":0.00261,"percentile":0.17408,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/cms-webhooks","fixedVersion":"12.4.31"},{"ecosystem":"Packagist","name":"typo3/cms-webhooks","fixedVersion":"13.4.12"}],"fix":{"url":"https://github.com/TYPO3-CMS/webhooks/commit/0df8b8adae577876fa253679c9ef3fe2a7ee64fd","label":"TYPO3-CMS/webhooks@0df8b8a"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47936.json"},{"type":"ADVISORY","url":"https://github.com/TYPO3/typo3/security/advisories/GHSA-p4xx-m758-3hpx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47936"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2025-012"},{"type":"WEB","url":"https://github.com/TYPO3-CMS/webhooks/commit/0df8b8adae577876fa253679c9ef3fe2a7ee64fd"},{"type":"PACKAGE","url":"https://github.com/TYPO3-CMS/webhooks"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T03:31:04.086924289Z"}}