CVE-2026-1629 — Vulnetix

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CVE-2026-1629 PUBLISHED CVSS 4.300000190734863 MEDIUM

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

EPSS 0.07% · 20.7th percentile

Risk Scores

CVSS v3.1

4.300000190734863

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

EPSS Score

0.07%

20.7th percentile

Affected Products

Vendor	Product	Versions
Mattermost	Mattermost	10.11.0, 11.4.0, 10.11.11
mattermost	mattermost_server	10.11.0, 10.11.0, 10.11.0

Timeline

Mar 16, 2026 CVE Published
Mar 17, 2026 EPSS Score
Mar 17, 2026 CVE Updated
Mar 18, 2026 EPSS Score
Mar 19, 2026 EPSS Score
Mar 20, 2026 EPSS Score
Mar 21, 2026 EPSS Score
Mar 22, 2026 EPSS Score
Mar 23, 2026 EPSS Score
Mar 24, 2026 EPSS Score
Mar 25, 2026 EPSS Score
Mar 25, 2026 Coalition ESS Score

References

MMSA-2026-00580 vendor-advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-1629 advisory

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