GHSA-q66g-q98c-q454

ghsaUSosv

Mattermost has missing redirect URL validation

view advisory published 2025-12-17Licence: CC-BY-4.0

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2025-62690US	medium6.1	0.15% (4th)	—	2025-12-17
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 opene…

references

External citations — patches, advisories, analysis.

https://github.com/mattermost/mattermostPACKAGE
https://github.com/mattermost/mattermost/commit/dad6bd7a1509054580a0898bbc0e026aac3b30cbWEB
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2025-62690ADVISORY

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