Is CVE-2022-39356 in the CISA KEV catalog?

No. CVE-2022-39356 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-39356?

CVE-2022-39356 has a CVSS v3 base score of 8.9 (HIGH).

What is the EPSS score for CVE-2022-39356?

CVE-2022-39356 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-39356?

Upgrade discourse to 2.8.10 or later.

CVE & CISA-KEV Catalog

CVE-2022-39356

HIGH

8.9

CVSS v3

NVD

Description

Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.

CWE-285

How to fix

Remediation Available

discourseNVD

Affected:< 2.8.10Fixed in:2.8.10CVE-2022-39356derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-285 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-29927	Critical	9.1	100%	-	Fix
CVE-2021-28799	Critical	10.0	78%	KEV + Ransom	Fix
CVE-2023-32707	High	8.8	74%	-	Fix
CVE-2023-48241	High	7.5	73%	-	Fix
CVE-2023-22480	High	7.3	67%	-	Fix
CVE-2022-3229	Critical	9.8	66%	-	-

Embed a live status badge for CVE-2022-39356

Markdown

[![CVE-2022-39356](https://tridentstack.com/cve/badge/CVE-2022-39356.svg)](https://tridentstack.com/cve/CVE-2022-39356)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-39356"><img src="https://tridentstack.com/cve/badge/CVE-2022-39356.svg" alt="CVE-2022-39356"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.