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CVE-2021-26812

80
FAUCET Score

CVE-2021-26812 describes a Cross-Site Scripting (XSS) vulnerability found in the Jitsi Meet plugin for Moodle, specifically versions 2.7 through 2.8.3, affecting the "sessionpriv.php" module. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to inject malicious JavaScript code into a user's browser by crafting and distributing a malicious URL, requiring user interaction to trigger the exploit. While there is no evidence of active exploitation or public exploit code like Metasploit modules, a Nuclei template exists for detection. Community discussion and media coverage for this CVE are minimal, indicating low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.7, <= 2.8.3CPE matchmatch criteria
cpe:2.3:a:jitsi:meet:*:*:*:*:*:moodle:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
97.46%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-26812 · Mar 6, 2021
This CVE's current EPSS score of 0.9746 is in the 100th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / udima-university/moodle-mod_jitsi/issues/67
ExploitIssue TrackingThird Party Advisory