CVE-2024-42000

mediumpriority · track · 17OT risk · elevatedEPSS 0.003 · 21 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (21st) EPSS

CVSS 4.3 · medium

Is it mine?

24 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Mattermost versions 9.10.x <= 9.10.2, 9.11.x <= 9.11.1, 9.5.x <= 9.5.9 and 10.0.x <= 10.0.0 fail to properly authorize the requests to /api/v4/channels which allows a User or System Manager, with "Read Groups" permission but with no access for channels to retrieve details about private channels that they were not a member of by sending a request to /api/v4/channels.

cvss

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

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.7–4.3

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

v3.12.7lowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.12.7lowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 1.2 · impact 1.4

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-863USprimary

affected products (24)

Products and version ranges known to be affected.

Mattermost Mattermost <10.0.0all versionscert_bundDE
Mattermost Mattermost <9.10.3all versionscert_bundDE
Mattermost Mattermost <9.11.2all versionscert_bundDE
Mattermost Mattermost <9.5.10all versionscert_bundDE
Mattermost Mattermost< 10.0.0cert_bundDE
Mattermost Mattermost< 9.10.3cert_bundDE
Mattermost Mattermost< 9.11.2cert_bundDE
Mattermost Mattermost< 9.5.10cert_bundDE
Mattermost Mattermost≤ 9.5.0 ≤9.5.9enisa_euvdEU
Mattermost Mattermost≤ 10.0.0enisa_euvdEU
Mattermost Mattermost≤ 9.10.0 ≤9.10.2enisa_euvdEU
Mattermost Mattermost≤ 9.11.0 ≤9.11.1enisa_euvdEU
mattermost mattermost server= 10.0.0nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.10.0 → 9.10.3nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.11.0 → 9.11.2nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.5.0 → 9.5.10nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Bitnami mattermost= 10.0.0osvUSpkg:bitnami/mattermost
Bitnami mattermost= 10.0.0-rc1osvUSpkg:bitnami/mattermost
Bitnami mattermost= 10.0.0-rc2osvUSpkg:bitnami/mattermost
Bitnami mattermost= 10.0.0-rc3osvUSpkg:bitnami/mattermost

showing 20 of 24

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-3051Mattermost: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2024-09-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Mattermost ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
BIT-mattermost-2024-420002024-11-15vendor · osvUS
Mattermost versions 9.10.x <= 9.10.2, 9.11.x <= 9.11.1, 9.5.x <= 9.5.9 and 10.0.x <= 10.0.0 fail to properly authorize the requests to /api/v4/channels which allows a User or System Manager, with "Read Groups" permission but with no access for channels to retrieve details about private channels that they were not a member of by sending a request to /api/v4/channels.

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 osv NVD CVE.org MITRE

published 2024-11-09modified 2026-06-17

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+5006 more

references (4)

External citations — patches, advisories, analysis.

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