Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Moodle (moodle/moodle) versions before 4.1.22, 4.4.12, 4.5.8, 5.0.4 and 5.1.1 (with the 4.2, 4.5 and 5.0 beta ranges also affected) contain a code injection flaw in the restore functionality. An attacker with access to the restore interface can trigger server-side execution of arbitrary code, which could lead to full compromise of the application. Upgrade to 4.1.22, 4.4.12, 4.5.8, 5.0.4 or 5.1.1, depending on your branch.
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 |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA (fedora) |
- CISA KEV Not listed.
- EPSS 0.0057, the 47th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:26 UTC First seen by agentprime
- 31 Oct 2026, 14:26 UTC Confirmed by OSV