How severe is CVE-2022-39279?

CVE-2022-39279 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2022-39279 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-39279?

CVE-2022-39279 affects Discourse Discourse-chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-39279?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-39279 published?

CVE-2022-39279 was published on 2022-10-06 and last updated on 2026-06-17.

CVE-2022-39279

CVE-2022-39279 is a medium-severity vulnerability in Discourse Discourse-chat with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Discourse Discourse-chat
Published: 2022-10-06
Last modified: 2026-06-17

Description

discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. Version 0.9 has addressed this issue. Users are advised to upgrade. There are no known workarounds for this issue.

Frequently asked questions

What is CVE-2022-39279?: discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. Version 0.9 has addressed this issue. Users are advised to upgrade. There are no known workarounds for this issue.
How severe is CVE-2022-39279?: CVE-2022-39279 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2022-39279 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-39279?: CVE-2022-39279 affects Discourse Discourse-chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-39279?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-39279 published?: CVE-2022-39279 was published on 2022-10-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:discourse:discourse-chat:*:*:*:*:*:discourse:*:*

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