CVE-2025-58084

mediumpriority · track · 26EPSS 0.003 · 22 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.30% (22nd) EPSS

CVSS 6.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-28

Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–6.5

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:Lsecondary · responsibledisclosure@mattermost.comexploitability 2.1 · impact 1.4

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1287US

affected products (4)

Products and version ranges known to be affected.

Mattermost Mattermost Desktop <5.13.1.0all versionscert_bundDE
Mattermost Mattermost≤ Desktop <5.13.1.0cert_bundDE
Mattermost Mattermost≤ 0 ≤5.13.0enisa_euvdEU
mattermost mattermost desktop< 5.13.1.0nvdUScpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2056Mattermost Desktop: Schwachstellen ermöglichten Denial of ServiceDeutsch2025-09-15csaf · cert_bundDE
Ein Angreifer kann eine Schwachstelle in Mattermost Desktop ausnutzen, um einen Denial of Service zu verursachen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2025-10-13modified 2026-10-19

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan