CVE-2025-53857

Name: CVE-2025-53857
Creator: NVD / NIST
Published: 2025-08-11T19:15:29.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.7/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-53857 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.

Metrics

CVSS 3.1

3.7/10

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

EPSS Probability

0.19%

9.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Mattermost	Confluence	< 1.5.0

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Aug 11, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-53857?

How severe is CVE-2025-53857?

CVE-2025-53857 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-53857?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-53857?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST