# CVE-2025-54458: Unauthorized Subscription Creation to Confluence Space in Mattermost Confluence Plugin

> CVE-2025-54458: Unauthorized Subscription Creation to Confluence Space in Mattermost Confluence Plugin. CVSS 5.0 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-54458
Last updated: 2026-06-17T09:40:08Z

- Published: 2025-08-11 18:57 UTC · Updated: 2026-06-17 09:40 UTC · Assigner: Mattermost
- CVSS: 5.0 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- EPSS: 0.21%, 11th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-862

## Description

Mattermost Confluence Plugin version \<1.5.0 fails to check the access of the user to the Confluence space which allows attackers to create a subscription for a Confluence space the user does not have access to via the create subscription endpoint.

## Affected vendors and products

- Mattermost: Mattermost Confluence Plugin

## Tracked companies

- [Mattermost](https://rewindex.com/company/mattermost.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-54458)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-54458)
- [https://mattermost.com/security-updates](https://mattermost.com/security-updates)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2025-54458 · Markdown: https://rewindex.com/cve/CVE-2025-54458.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-54458 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:56.383Z