CVE-2026-1629 — Operation on a Resource after Expiration or Release in Server

CWE-672 — Operation on a Resource after Expiration or Release3 documents3 sources
Severity
4.3MEDIUMNVD
EPSS
0.1%
top 78.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mattermost ServerMattermost
Timeline
PublishedMar 16

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitability: 2.8 | Impact: 1.4

Affected Packages2 packages

▶NVDmattermost/mattermost_server10.11.0 — 10.11.11
▶CVEListV5mattermost/mattermost10.11.0 — 10.11.10

🔴Vulnerability Details

2
CVEList
Permalink Preview Information Disclosure After Permission Revocation↗2026-03-16
▶
GHSA
GHSA-f77j-wjfq-qgmp: Mattermost versions 10↗2026-03-16
▶