CVE-2026-75588

lowpriority · track · 0EPSS 0.002 · 13 %ileDEUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.22% (13th) EPSS
CVSS 2.6 · low
Is it mine?
5 products
Check your exposure
Who says so?
2 sources
cert_bund · nvd

EPSS · scored 2026-10-28

Mattermost Desktop App versions <=6.2 6.2.2.0 fail to validate the URL scheme when checking whether a target URL is internal to the connected server, which allows a network-positioned attacker to load a plugin popout window over an insecure connection via a link using a downgraded URL scheme. Mattermost Advisory ID: MMSA-2026-00717

01

cvss

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

2.6
010

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

v3.12.6lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 1.2 · impact 1.4
v3.12.4lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1287US
04

affected products (5)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-2876Mattermost Desktop: Mehrere SchwachstellenDeutsch2026-08-17csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Mattermost Desktop ausnutzen, um Informationen offenzulegen oder um nicht näher spezifizierte Auswirkungen zu verursachen.

06

sources

Which sources assert this record, and when.

cert_bundnvdNVDCVE.orgMITRE
published 2026-09-17modified 2026-10-13
07

references (1) nvd

External citations — patches, advisories, analysis.

scry

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