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CVE-2021-39205

21
FAUCET Score

CVE-2021-39205 is a client-side cross-site scripting (XSS) vulnerability affecting Jitsi Meet versions prior to 2.0.6173, allowing attackers to inject unescaped properties into JSON objects. Rated Medium (CVSS 6.1), it requires user interaction and network access, potentially leading to low confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.6173CPE matchmatch criteria
cpe:2.3:a:8x8:jitsi_meet:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.23%
Probability of exploitation in next 30 days
EPSS Percentile
65.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0123 is in the 78th percentile among its peer group of 26,221 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / jitsi/jitsi-meet/pull/9320
PatchThird Party Advisory
github.com / jitsi/jitsi-meet/pull/9404
PatchThird Party Advisory
github.com / jitsi/jitsi-meet/security/advisories/GHSA-6582-8v9q-v3fg
Third Party Advisory
hackerone.com / reports/1214493
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