CVE-2026-75025: Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from
Source GCVE Database
Not known to be exploited · CVSS 4.7 Medium · fixed in 6.2.2.0 : update affected systems when convenient.
Data as of 31 Oct 2026, 20:20 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.2.2.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
AI-suggested
Upgrade Mattermost Desktop App to version 6.2.2.0 or later where this vulnerability is fixed. No other specific mitigations are indicated by the vendor advisory.
Description
Mattermost Desktop App versions up to 6.2.2.0 had a vulnerability where server-rendered content was not sufficiently restricted from accessing local or private network resources. This issue was fixed in version 6.2.2.0. The vulnerability has a medium severity with a CVSS score of 4.7 and involves a security bypass that could allow limited information disclosure.