Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
| Severity/Risk: | Serious |
| Versions affected: | 4.1 to 4.1.1, 4.0 to 4.0.6, 3.11 to 3.11.12, 3.9 to 3.9.19 and earlier unsupported versions |
| Versions fixed: | 4.1.2, 4.0.7, 3.11.13 and 3.9.20 |
| Reported by: | Vincent Schneider (cli-ish) |
| Workaround: | Remove restore activity/course capabilities until the patch is applied. |
| CVE identifier: | CVE-2023-28330 |
| Changes (master): | http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77204 |
| Tracker issue: | MDL-77204 Authenticated arbitrary file read through malformed backup file |