GO-2025-3692 CVE-2025-31947 GHSA-qgwx-rffp-6cx9
Mattermost Fails to Lockout LDAP Users After Repeated Login Failures in github.com/mattermost/mattermost-server
Medium
Go
- Severity
- 5.3 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 0.35%
- Chance of exploitation in the next 30 days. Higher than 28.76% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-645 Overly Restrictive Account Lockout Mechanism
- Fix
- Available
- 2 packages have a fixed version
Description
Mattermost Fails to Lockout LDAP Users After Repeated Login Failures in github.com/mattermost/mattermost-server
Affected versions
Go
| Package | Vulnerable | Fixed in |
|---|---|---|
| github.com/mattermost/mattermost-server | >= 9.11.0+incompatible, < 9.11.12+incompatible>= 10.4.0+incompatible, < 10.4.5+incompatible>= 10.5.0+incompatible, < 10.5.3+incompatible>= 10.6.0+incompatible, < 10.6.2+incompatible |
9.11.12+incompatible10.4.5+incompatible10.5.3+incompatible10.6.2+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions |
No fix yet |
| github.com/mattermost/mattermost-server/v6 | all versions |
No fix yet |
| github.com/mattermost/mattermost/server/v8 | >= 10.6.0, < 10.6.2 |
10.6.2 |
| github.com/mattermost/mattermost/server/v8 | >= 10.5.0, < 10.5.3 |
10.5.3 |
| github.com/mattermost/mattermost/server/v8 | >= 10.4.0, < 10.4.5 |
10.4.5 |
| github.com/mattermost/mattermost/server/v8 | >= 9.11.0, < 9.11.12 |
9.11.12 |
| github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250415054241-76ab3867b785 |
8.0.0-20250415054241-76ab3867b785 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
github.com/mattermost/mattermost-server Go → 10.6.2+incompatible
- go
go get github.com/mattermost/mattermost-server@v10.6.2+incompatible && go mod tidy
github.com/mattermost/mattermost/server/v8 Go → 10.6.2
- go
go get github.com/mattermost/mattermost/server/v8@v10.6.2 && go mod tidy
Severity breakdown
CVSS 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Weakness
CWE-645: Overly Restrictive Account Lockout Mechanism
The product contains an account lockout protection mechanism, but the mechanism is too restrictive and can be triggered too easily, which allows attackers to deny service to legitimate users by causing their accounts to be locked out.
How to prevent it
- Architecture and Design: Implement more intelligent password throttling mechanisms such as those which take IP address into account, in addition to the login name.
- Architecture and Design: Implement a lockout timeout that grows as the number of incorrect login attempts goes up, eventually resulting in a complete lockout.
- Architecture and Design: Consider alternatives to account lockout that would still be effective against password brute force attacks, such as presenting the user machine with a puzzle to solve (makes it do some computation).
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-xmfh-3ccg-c9fx Mattermost has an Incorrect Authorization issue | Low | Also affects github.com/mattermost/mattermost-server |
| GHSA-h998-hxxj-8q83 Mattermost doesn't invalidate cached authentication state for active WebSocket connections during global session revocation | Medium | Also affects github.com/mattermost/mattermost-server |
| GHSA-g5vr-6pgg-74qv Mattermost doesn't enforce bot-specific permission checks on the user active status endpoint | Low | Also affects github.com/mattermost/mattermost-server |
| GHSA-jqgv-39mg-7c2r Mattermost doesn't authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret | Medium | Also affects github.com/mattermost/mattermost-server |
| GHSA-mxq2-5jpg-7474 Mattermost doesn't validate channel ownership of an existing subscription before applying edits | Medium | Also affects github.com/mattermost/mattermost-server |
| GHSA-2g8v-grq3-hq2g Mattermost doesn't enforce administrator authorization on the {{setDefaultInstance}} call within the {{/gitlab connect}} command handler | Medium | Also affects github.com/mattermost/mattermost-server |
| GHSA-6hxm-w4hv-vgvw Mattermost doesn't require role-management authorization when setting the scheme_admin flag on group syncable link and patch endpoints | High | Also affects github.com/mattermost/mattermost-server |
| GHSA-9p44-r552-4wp9 Mattermost doesn't sanitize the Remote Cluster API response on PATCH operations | Medium | Also affects github.com/mattermost/mattermost-server |
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