CVE-2026-1629 is a medium-severity vulnerability affecting Mattermost server versions 10.11.x up to 10.11.10. The flaw allows a user who has lost access to a private channel to continue viewing its content via previously cached permalink previews due to improper invalidation of cached data. Rated with a CVSS score of 4.3, this vulnerability has a low attack complexity and requires low privileges, enabling a network-based attacker to achieve low confidentiality impact. There is currently no evidence of active exploitation, no public exploit code available, and it is not listed on the CISA KEV catalog or any hotlists, indicating minimal public attention or immediate threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 10.11.0, <= 10.11.10CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 10.11.0, < 10.11.11CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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.
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 records are not available for this CVE.