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Medium 6.1Published Dec 17, 2025

CVE-2025-62690Mattermost 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.

Updated under an hour ago ()

Does this affect you?

It affects mattermost_server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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
6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-601
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Not given
NVD analysis
Analyzed
Record last updated
Oct 13, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
mattermost mattermost_server
mattermost:mattermost_server
from 10.11.0 before 10.11.5
NVD

References

  • vendor-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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