A session hijack risk was identified in the Shibboleth authentication plugin. (Note: Shibboleth authentication is disabled by default in Moodle.)
| Severity/Risk: | Serious |
| Versions affected: | 3.11 to 3.11.2, 3.10 to 3.10.6, 3.9 to 3.9.9 and earlier unsupported versions |
| Versions fixed: | 3.11.3, 3.10.7 and 3.9.10 |
| Reported by: | Robin Peraglie and Johannes Moritz |
| CVE identifier: | CVE-2021-40691 |
| Changes (master): | http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-71976 |
| Tracker issue: | MDL-71976 Session Hijack risk when Shibboleth authentication is enabled |