VulnSocial

CVE-2026-2325General(mattermost / mattermost_server)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 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 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to limit the size of the request body on the start meeting API endpoint, which allows an authenticated attacker to cause resource exhaustion or denial of service via a crafted oversized HTTP POST request to {{/api/v1/meetings}}.. Mattermost Advisory ID: MMSA-2026-00608

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

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 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-18); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
mattermost
Products
mattermost_server

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-18: 1Mentions · 2026-05-19: 1Technical Details · 2026-05-18: 1Technical Details · 2026-05-19: 105-1805-19
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-181
General1
2026-05-191
Disclosure1
Full discourse2 posts
  • CVEarity@CVEarity
    Disclosure

    ⚡ New CVE Alert: CVE-2026-2325 📊 Severity: 4.3 🚨 Risk Level: Medium 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-2325 #CVE-2026-2325 #CVE #Medium  #CyberSecurity #InfoSec https://t.co/2ATkEeODYU

    Post summary

    The tweet announces the new CVE-2026-2325 with a medium severity rating and no further details on exploitation or remediation.

    0000061
    160 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-2325 Denial of Service via Oversized Request in Mattermost Meeting API Endpoint https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-2325

    Post summary

    The brief note identifies CVE‑2026‑2325 as a denial‑of‑service flaw in Mattermost's Meeting API but provides no further details on exploitation, patches, or proven activity.

    0000057
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmattermostmattermost_server---

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