How severe is CVE-2025-44004?

CVE-2025-44004 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-44004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-44004?

CVE-2025-44004 affects Mattermost Confluence. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-44004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-44004 have an EU (EUVD) identifier?

Yes. CVE-2025-44004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24180.

When was CVE-2025-44004 published?

CVE-2025-44004 was published on 2025-08-11 and last updated on 2026-06-17.

CVE-2025-44004

CVE-2025-44004 is a high-severity vulnerability in Mattermost Confluence with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24180
Weakness: CWE-306
Affected product: Mattermost Confluence
Published: 2025-08-11
Last modified: 2026-06-17

Description

Mattermost Confluence Plugin version <1.5.0 fails to check the authorization of the user to the Mattermost instance which allows attackers to create a channel subscription without proper authorization via API call to the create channel subscription endpoint.

Frequently asked questions

What is CVE-2025-44004?: Mattermost Confluence Plugin version <1.5.0 fails to check the authorization of the user to the Mattermost instance which allows attackers to create a channel subscription without proper authorization via API call to the create channel subscription endpoint.
How severe is CVE-2025-44004?: CVE-2025-44004 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-44004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-44004?: CVE-2025-44004 affects Mattermost Confluence. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-44004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-44004 have an EU (EUVD) identifier?: Yes. CVE-2025-44004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24180.
When was CVE-2025-44004 published?: CVE-2025-44004 was published on 2025-08-11 and last updated on 2026-06-17.

References

https://mattermost.com/security-updates

Affected products (1)

cpe:2.3:a:mattermost:confluence:*:*:*:*:*:mattermost:*:*

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