CVE-2026-93847

lowpriority · track · 0OT risk · elevatedEPSS 0.002 · 7 %ile
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.17% (7th) EPSS
CVSS 3.5 · low
Is it mine?
0 products
Check your exposure
Who says so?
— sources

EPSS · scored 2026-10-27

Mattermost versions 11.7.x <= 11.7.10 fail to validate reserved system post types on the scheduled post creation and publication paths which allows an authenticated channel member to publish messages rendering as trusted system events via the scheduled post endpoint.. Mattermost Advisory ID: MMSA-2026-00732

01

cvss

Technical severity, 0–10. One row per scoring source.

3.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 2.1 · impact 1.4
v3.13.2lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863US
03

affected products

Products and version ranges known to be affected.

No affected products recorded.

04

sources

Which sources assert this record, and when.

NVDCVE.orgMITRE
published 2026-10-26modified 2026-10-26
05

references (1) nvd

External citations — patches, advisories, analysis.

scry

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