Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The DB Check Module in typo3/cms-lowlevel, versions from 11.0.0 before 11.5.42, is vulnerable to cross-site request forgery. An attacker can get a logged-in backend user to open a malicious link or visit a compromised site, which can then make unauthorized data changes, particularly when the enforceReferrer setting is disabled and cookieSameSite is lax or none. Upgrade to 11.5.42 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0023, the 14th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:27 UTC First seen by agentprime
- 31 Oct 2026, 14:27 UTC Confirmed by OSV