Medium severity · published Dec 17, 2025
CVE-2025-62690
Open redirect in error page when link opened in new tab
6.1
CVSS
0.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
10.11.0 through 10.11.4 · source: vendor
MS
Mattermost Server · Mattermost
10.11.0 before 10.11.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62690
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62690
Vendor Advisory
https://mattermost.com/security-updates
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