CVE-2024-9155

mediumpriority · track · 0OT risk · elevatedEPSS 0.003 · 18 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.26% (18th) EPSS

CVSS 4.3 · medium

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Mattermost versions 9.10.x <= 9.10.1, 9.9.x <= 9.9.2, 9.5.x <= 9.5.8 fail to limit access to channels files that have not been linked to a post which allows an attacker to view them in channels that they are a member of.

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

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 2.8 · 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-863US

affected products (16)

Products and version ranges known to be affected.

Mattermost Mattermost <10.0.0all versionscert_bundDE
Mattermost Mattermost <9.10.2all versionscert_bundDE
Mattermost Mattermost <9.11.1all versionscert_bundDE
Mattermost Mattermost <9.5.9all versionscert_bundDE
Mattermost Mattermost <9.9.3all versionscert_bundDE
Mattermost Mattermost< 10.0.0cert_bundDE
Mattermost Mattermost< 9.10.2cert_bundDE
Mattermost Mattermost< 9.11.1cert_bundDE
Mattermost Mattermost< 9.5.9cert_bundDE
Mattermost Mattermost< 9.9.3cert_bundDE
Mattermost Mattermost≤ 9.9.0 ≤9.9.2enisa_euvdEU
Mattermost Mattermost≤ 9.5.0 ≤9.5.8enisa_euvdEU
Mattermost Mattermost≤ 9.10.0 ≤9.10.1enisa_euvdEU
mattermost mattermost server9.10.0 → 9.10.2nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.5.0 → 9.5.9nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.9.0 → 9.9.3nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1957Mattermost Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2024-08-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Mattermost Server ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

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 2024-09-26modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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