It was possible to include JavaScript in a book's chapter title, which was not escaped on the "Add new chapter" page.
Note: By default this functionality is only available to trusted users (such as teachers), but has been included as a security issue as a precaution, since it was not sanitized on sites with forceclean...
The decompressed size of zip files was not checked against available user quota before unzipping them, which could lead to a denial of service risk.
| Severity/Risk: | Serious |
| Versions affected: | 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions |
| Versions fixed: | 3.9.2, 3.8.5, 3.7.8 and 3.5.14 |
| Rep |
Users with "Log in as" capability in a course context (typically, course managers) may gain access to some site administration capabilities by "logging in as" a System manager.
| Severity/Risk: | Minor |
| Versions affected: | 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions |
| Versions fixed: | 3.9.2, |
The filter in the admin task log required extra sanitizing to prevent a reflected XSS risk.
| Severity/Risk: | Serious |
| Versions affected: | 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions |
| Versions fixed: | 3.9.2, 3.8.5, 3.7.8 and 3.5.14 |
| Reported by: | Luuk Verhoeven |
| CVE identifier: | CVE-2020-25628 |
| Chang |