CVE-2025-53514 json
Unexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence Plugin
published 2025-08-11 14 mo ago modified 2026-06-17 4 mo ago also GHSA-w92j-c6gr-hj8r , GO-2025-3871 , EUVD-2025-24176
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- 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 server webhook 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
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/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-2025-53514
advisory
-
github.com
/mattermost/mattermost-plugin-confluence
package
-
github.com
/advisories/GHSA-w92j-c6gr-hj8r
advisory
Sources
- CVE List CVE-2025-53514
- GitHub Advisory GHSA-w92j-c6gr-hj8r
- NVD CVE-2025-53514
- OSV GO-2025-3871
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