CVE-2026-2476

mediumpriority · track · 17EPSS 0.002 · 8 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (8th) EPSS

CVSS 4.3 · medium

Is it mine?

19 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606

cvss

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

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.6

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:Nsecondary · ENISA EU

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 2.3 · impact 4.7

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:Nsecondary · OSV

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/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-200USCWE-200US

affected products (19)

Products and version ranges known to be affected.

Mattermost Mattermost Desktop <5.13.3.0all versionscert_bundDE
Mattermost Mattermost Desktop <5.13.4.0all versionscert_bundDE
Mattermost Mattermost Plugins <10.11.11all versionscert_bundDE
Mattermost Mattermost Plugins <2.3.1.0all versionscert_bundDE
Mattermost Mattermost Server <10.11.11all versionscert_bundDE
Mattermost Mattermost Server <11.2.3all versionscert_bundDE
Mattermost Mattermost Server <11.3.1all versionscert_bundDE
Mattermost Mattermost Server <11.4.0all versionscert_bundDE
Mattermost Mattermost≤ Desktop <5.13.4.0cert_bundDE
Mattermost Mattermost≤ Desktop <5.13.3.0cert_bundDE
Mattermost Mattermost≤ Plugins <10.11.11cert_bundDE
Mattermost Mattermost≤ Plugins <2.3.1.0cert_bundDE
Mattermost Mattermost≤ Server <10.11.11cert_bundDE
Mattermost Mattermost≤ Server <11.2.3cert_bundDE
Mattermost Mattermost≤ Server <11.3.1cert_bundDE
Mattermost Mattermost≤ Server <11.4.0cert_bundDE
Mattermost Mattermost≤ 0 ≤2.0.3enisa_euvdEU
mattermost ms teams< 2.3.1nvdUScpe:2.3:a:mattermost:ms_teams:*:*:*:*:*:*:*:*
Go github.com/mattermost/mattermost-plugin-msteams< 1.15.1-0.20260102165339-036c761bd3cbosvUSpkg:golang/github.com/mattermost/mattermost-plugin-msteams

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0422Mattermost: Mehrere SchwachstellenDeutsch2026-02-15csaf · cert_bundDE
Ein authentisierter Angreifer kann mehrere Schwachstellen in Mattermost ausnutzen, um falsche Informationen anzuzeigen, Informationen offenzulegen, Sicherheitskontrollen zu umgehen und eine Denial-of-Service-Situation zu erzeugen.
GHSA-4ppj-6chv-5pgcMattermost Microsoft Teams Plugin fails to properly mask sensitive configuration values2026-03-16ghsa · osvUS
Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606
GO-2026-4784Mattermost Microsoft Teams Plugin fails to properly mask sensitive configuration values in github.com/mattermost/mattermost-plugin-msteams2026-03-23vendor · osvUS
Mattermost Microsoft Teams Plugin fails to properly mask sensitive configuration values in github.com/mattermost/mattermost-plugin-msteams

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-03-16modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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