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CVE-2026-1629

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CVE-2026-1629

Published: Mar 16, 2026

Modified: Mar 17, 2026

PUBLISHED

CVSS v3.1

4.3

MEDIUM

Description

Mattermost versions 10.11.x <= 10.11.10 Fail to invalidate cached permalink preview data when a user loses channel access which allows the user to continue viewing private channel content via previously cached permalink previews until cache reset or relogin.. Mattermost Advisory ID: MMSA-2026-00580

VendorProductVersions

Mattermost

Mattermost

affected
10.11.0 - <= 10.11.10
unaffected
11.4.0
unaffected
10.11.11

Weaknesses (CWE)

CWE-672

CVSS v3.1 Details

CVSS v3.1 Vector

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

Low

Integrity

None

Availability

None

References

MMSA-2026-00580
vendor-advisory

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