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CVE-2025-62690 Low

Mattermost has missing redirect URL validation in github.com/mattermost/mattermost

Mattermost has missing redirect URL validation in github.com/mattermost/mattermost. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost before v10.11.5-0.20251016131338-dad6bd7a1509.

Exploit probability 0.1%
Published January 14, 2026
Required by Not available
Last source change March 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

15 explicit affected versions

Go github.com/mattermost/mattermost
Go github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server/v5
Go github.com/mattermost/mattermost-server/v6
Go github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost
Go github.com/mattermost/mattermost/server/v8

03 / CONNECTIONS

Connected vulnerabilities

related OPENSUSE-SU-2026:21483-1

04 / EVIDENCE

Source records

Open Source Vulnerabilities GO-2025-4248

Mattermost has missing redirect URL validation in github.com/mattermost/mattermost. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost before v10.11.5-0.20251016131338-dad6bd7a1509.

View original source
Open Source Vulnerabilities GHSA-q66g-q98c-q454

Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.

View original source
Open Source Vulnerabilities CVE-2025-62690

Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.

View original source

05 / REFERENCES

Further evidence