Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Contao's contao/core-bundle package, versions 5.7.0 up to but not including 5.7.12, has an improper access control flaw in the table access voter that governs backend Data Container table permissions. A low-privileged backend user can, after a table they are allowed to access has been checked in the same request, gain read, create, update and delete access to other tables outside their module permissions, including tables holding member records and newsletter subscriber e-mail addresses. Upgrade contao/core-bundle to 5.7.12 or later, which is the fixed version.
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:L/UI:N/S:U/C:L/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0019, the 9th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:54 UTC First seen by agentprime
- 31 Oct 2026, 13:54 UTC Confirmed by OSV