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CVE-2024-4195

LOW
2.7
CVSS Score
Published: April 26, 2024 at 08:26 AM UTC
Updated: June 17, 2026 at 08:01 AM UTC
4 products affected across 2 vendorsMattermost ServerMattermostMattermost

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Severity
LOW2.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mattermost Server· Mattermost
95%
8.1.0 ≤ v < 8.1.129.5.0 ≤ v < 9.5.3
Affected range stops below 8.1.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.5.3, so it looks safe — our inference, not a vendor statement
Mattermost· Jenkinsjenkins-plugin
60%
8.1.09.5.09.6.0
Vendor states this is fixed in 8.1.12 (unaffected)
Vendor states this is fixed in 9.5.3 (unaffected)
Vendor states this is fixed in 9.6.1 (unaffected)
Vendor states this is fixed in 9.7.0 (unaffected)
Mattermost· Mattermost
60%
8.1.0 ≤ v ≤ 8.1.119.5.0 ≤ v ≤ 9.5.28.1.09.5.09.6.0
Vendor states this is fixed in 8.1.12 (unaffected)
Vendor states this is fixed in 9.5.3 (unaffected)
Vendor states this is fixed in 9.6.1 (unaffected)
Vendor states this is fixed in 9.7.0 (unaffected)
Mattermost Notification· Jenkinsjenkins-plugin
50%
8.1.09.5.09.6.0
Vendor states this is fixed in 8.1.12 (unaffected)
Vendor states this is fixed in 9.5.3 (unaffected)
Vendor states this is fixed in 9.6.1 (unaffected)
Vendor states this is fixed in 9.7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.7LOWMattermost
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284NVD-CWE-noinfo

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