CVE-2025-52931 json
Unexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin
published last yr. modified 4mo ago also GHSA-vc77-c2hx-h5x2 , GO-2025-3870 , EUVD-2025-24177
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to update channel subscription endpoint with an invalid request body.
Patch / fix
- go github.com/mattermost/mattermost-plugin-confluence 1.5.0
- Mattermost Mattermost Confluence Plugin 1.5.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250818T190335-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15469-1
Is CVE-2025-52931 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-confluence | <1.5.0 |
1.5.0 |
Affected products
- Mattermost Mattermost Confluence Plugin
Classification
- Weakness
-
- CWE-754 Improper Check for Unusual or Exceptional Conditions
References
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-52931
advisory
-
github.com
/mattermost/mattermost-plugin-confluence
package
-
github.com
/advisories/GHSA-vc77-c2hx-h5x2
advisory
Sources
- CVE List CVE-2025-52931
- GitHub Advisory GHSA-vc77-c2hx-h5x2
- NVD CVE-2025-52931
- OSV GO-2025-3870
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