Sensitive credentials exposed in plaintext in Mattermost support packets
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 10.11.14+incompatible, 11.4.4+incompatible, 11.5.2+incompatible, 8.0.0-20260326202606-fac92f4a71f3, 11.5.2, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields before including them in support packet generation, which allows a Mattermost System Admin or any party with access to a support packet to obtain sensitive credentials in plaintext via downloading a support packet from the System Console.. Mattermost Advisory ID: MMSA-2026-00607
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Mattermost Mattermost
From 11.5.0 · through 11.5.1; From 10.11.0 · through 10.11.13; From 11.4.0 · through 11.4.3
- github.com/mattermost/mattermost-serverGo
From 10.11.0+incompatible · fixed in 10.11.14+incompatible; From 11.4.0+incompatible · fixed in 11.4.4+incompatible; From 11.5.0+incompatible · fixed in 11.5.2+incompatible
- github.com/mattermost/mattermost-server/v5Go
All versions
- github.com/mattermost/mattermost-server/v6Go
All versions
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.0.0-20260326202606-fac92f4a71f3
- github.com/mattermost/mattermost/server/v8Go
From 11.5.0 · fixed in 11.5.2
- github.com/mattermost/mattermost/server/v8Go
From 10.11.0 · fixed in 10.11.14
- github.com/mattermost/mattermost/server/v8Go
From 11.4.0 · fixed in 11.4.4
- github.com/mattermost/mattermost-serverGo
fixed in 5.3.2-0.20260326202606-fac92f4a71f3