VulnSocial

CVE-2026-1629Disclosure(mattermost / mattermost_server)

LOWCVSS 4.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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

mattermost CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-672

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mattermost_server

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
mattermost
Products
mattermost_server

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-03-17: 2Technical Details · 2026-03-17: 203-17
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-1629 Mattermost versions 10.11.x &lt;= 10.11.10 Fail to invalidate cached permalink preview data when a user loses channel access which allows the user to continue viewing priv… https://www.cve.org/CVERecord?id=CVE-2026-1629

    Post summary

    The CVE-2026-1629 vulnerability in Mattermost versions 10.11.x <= 10.11.10 allows users who have lost channel access to still view cached permalink preview data, indicating a disclosure of a data exposure flaw.

    0000089
    56.7K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-1629 Mattermost Permalink Preview Information Disclosure in Versions 10.11.x &lt;= 10.11.10 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-1629

    Post summary

    The post identifies CVE‑2026‑1629 as an information‑disclosure flaw in Mattermost’s permalink preview feature for versions up to 10.11.10, with details linked to Vulmon. It lacks evidence of exploits, patches, or active attacks.

    0000056
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmattermostmattermost_server---

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