Description
A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | moodle | 5.2.0 – < 5.2.2, 5.1.0 – < 5.1.6, 5.0.0 – < 5.0.9, < 4.5.13 | 5.2.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | moodle | No fix yet | — |
| Ubuntu Pro 16.04 LTS | moodle | No fix yet | — |