Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Moodle versions before 4.1.12, from 4.2.0-beta before 4.2.9, from 4.3.0-beta before 4.3.6, and from 4.4.0-beta before 4.4.2 are affected. Insufficient sanitizing in the TeX notation filter can allow arbitrary file read on sites where pdfTeX is installed, such as those with TeX Live. Upgrade to 4.1.12, 4.2.9, 4.3.6, or 4.4.2, depending on your branch. The source gives few details about the exact attack conditions.
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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA (fedora) |
- CISA KEV Not listed.
- EPSS 0.0071, the 53rd 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