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CVE-2025-1412

Session Persistence After User-to-Bot Conversion

HIGH
8.8
CVSS Score
Published: February 24, 2025 at 07:24 AM UTC
Updated: June 17, 2026 at 08:39 AM UTC
2 products affected across 1 vendorMattermost ServerMattermost

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Mattermost versions 9.11.x <= 9.11.6, 10.4.x <= 10.4.1 fail to invalidate all active sessions when converting a user to a bot, with allows the converted user to escalate their privileges depending on the permissions granted to the bot.

Affected

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

Mattermost Server· Mattermost
95%
10.4.0 ≤ v < 10.4.29.11.0 ≤ v < 9.11.7
Mattermost· Mattermost
60%
10.4.0 ≤ v ≤ 10.4.19.11.0 ≤ v ≤ 9.11.610.4.09.11.0
Vendor states this is fixed in 10.4.2 (unaffected)
Vendor states this is fixed in 10.5.0 (unaffected)
Vendor states this is fixed in 9.11.7 (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

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-384

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