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CVE-2022-39279

20
FAUCET Score

CVE-2022-39279 is a Cross-Site Scripting (XSS) vulnerability affecting the discourse-chat plugin for Discourse message boards, specifically versions prior to 0.9. This flaw allows authenticated staff members to inject unsafe HTML into chat channel names and descriptions, leading to XSS attacks. The vulnerability has a CVSS score of 5.4 (Medium), indicating a network-based attack with low complexity, requiring low privileges and user interaction, potentially impacting confidentiality and integrity. There is no evidence of active exploitation, nor are there any known public exploit codes or Metasploit modules. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9CPE matchmatch criteria
cpe:2.3:a:discourse:discourse-chat:*:*:*:*:*:discourse:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
0.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 47th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.0 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 / discourse/discourse-chat/commit/25737733af48e5b9fa60b0561d7fde14bea13cce
PatchThird Party Advisory
github.com / discourse/discourse-chat/security/advisories/GHSA-qp62-8m3c-9jgj
Third Party Advisory