CVE-2025-59017: TYPO3 CMS · Missing Authorization
Affects TYPO3 CMSSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium.
Data as of 26 Oct 2026, 09:08 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| TYPO3 TYPO3 CMS | Affected
| Fixed in– |
AI-suggested
Organizations should immediately audit their TYPO3 CMS backend user roles and permissions to ensure the principle of least privilege is enforced, minimizing the number of users with backend access. Until an official patch is released, consider implementing additional access controls such as IP whitelisting for backend access, multi-factor authentication (MFA) for backend users, and monitoring/logging of backend AJAX route invocations to detect anomalous activity. Network segmentation can also help limit exposure of the backend interface. Administrators should stay alert for official TYPO3 security advisories and apply patches as soon as they become available. Additionally, reviewing custom extensions or plugins that interact with backend routes may help identify and mitigate any exacerbating factors. Employing a web application firewall (WAF) with custom rules to restrict unauthorized AJAX calls could provide a temporary protective layer.
Description
Missing authorization checks in the Backend Routing of TYPO3 CMS versions 9.0.0‑9.5.54, 10.0.0‑10.4.53, 11.0.0‑11.5.47, 12.0.0‑12.4.36, and 13.0.0‑13.4.17 allow backend users to directly invoke AJAX backend routes without having access to the corresponding backend modules.