Is CVE-2025-13352 in the CISA KEV catalog?

No. CVE-2025-13352 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-13352?

CVE-2025-13352 has a CVSS v3 base score of 3.0 (LOW).

What is the EPSS score for CVE-2025-13352?

CVE-2025-13352 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13352?

Upgrade mattermost server to 10.11.7 or later.

CVE & CISA-KEV Catalog

CVE-2025-13352

LOW

3.0

CVSS v3

NVD

Description

Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.

CWE-1287Improper Validation of Specified Type of Input

How to fix

Remediation Available

mattermost serverNVD

Affected:>= 10.11.0, < 10.11.7Fixed in:10.11.7CVE-2025-13352derived 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 ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Vendor Advisory1

mattermost.com

Embed a live status badge for CVE-2025-13352

Markdown

[![CVE-2025-13352](https://tridentstack.com/cve/badge/CVE-2025-13352.svg)](https://tridentstack.com/cve/CVE-2025-13352)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-13352"><img src="https://tridentstack.com/cve/badge/CVE-2025-13352.svg" alt="CVE-2025-13352"></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 2025-12-29.