Is CVE-2025-14273 in the CISA KEV catalog?

No. CVE-2025-14273 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-14273?

CVE-2025-14273 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2025-14273?

CVE-2025-14273 has an EPSS score of 0.23% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-14273?

Upgrade mattermost server to 11.1.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-14273

HIGH

7.2

CVSS v3

NVD

Description

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555

CWE-303

How to fix

Remediation Available

mattermost serverNVD

Affected:>= 11.1.0, < 11.1.1Fixed in:11.1.1CVE-2025-14273derived 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 RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Vendor Advisory1

mattermost.com

Embed a live status badge for CVE-2025-14273

Markdown

[![CVE-2025-14273](https://tridentstack.com/cve/badge/CVE-2025-14273.svg)](https://tridentstack.com/cve/CVE-2025-14273)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-14273"><img src="https://tridentstack.com/cve/badge/CVE-2025-14273.svg" alt="CVE-2025-14273"></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.