Vulnerability · Published Dec 17, 2025 · Assigned by Mattermost
CVE-2025-62690Open redirect in error page when link opened in new tab
Low 3.1
In plain English
A low-severity open redirect in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost | 10.11.5-0.20251016131338-dad6bd7a1509 | GHSA-q66g-q98c-q454 |
| Go | github.com/mattermost/mattermost | 11.1.0 | GHSA-q66g-q98c-q454 |
| Go | github.com/mattermost/mattermost | 11.1.0+incompatible | GO-2025-4248 |
| Go | github.com/mattermost/mattermost-server | no fix listed | GO-2025-4248 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2025-4248 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2025-4248 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251016131338-dad6bd7a1509 | GO-2025-4248 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251016131338-dad6bd7a1509 | GHSA-q66g-q98c-q454 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.11.0 – through 10.11.4 |
Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N