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CVE-2025-3228

15
FAUCET Score

CVE-2025-3228 is a medium-severity vulnerability affecting Mattermost Server versions 10.5.x through 10.5.5, 9.11.x through 9.11.15, 10.8.x through 10.8.0, 10.7.x through 10.7.2, and 10.6.x through 10.6.5. The vulnerability, rated CVSS 4.3, stems from improper retrieval of requestorInfo for guest users in the playbooks handler, allowing an authenticated attacker to gain unauthorized access to playbook runs. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.11.0, < 9.11.16CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 10.5.0, < 10.5.6CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 10.6.0, < 10.6.6CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 10.7.0, < 10.7.3CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
10.8.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:10.8.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 20th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

gopatch availablevia ghsa
Product: github.com/mattermost/mattermost-serverFixed in: 0.0.0-20250520060012-d0380305ef7a
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 8.0.0-20250520060012-d0380305ef7a
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 10.5.6
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.11.16
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 10.8.1
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 10.7.3
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 10.6.6

Vendor Advisories (1)

goGHSA-4578-6gjh-f2jmmedium

Mattermost allows an unauthorized Guest user access to Playbook

Jun 20, 2025

References

mattermost.com / security-updates
Vendor Advisory