CVE-2025-4981

criticalpriority · track · 0EPSS 0.010 · 63 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.02% (63rd) EPSS

CVSS 9.9 · critical

Is it mine?

30 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to sanitize filenames in the archive extractor which allows authenticated users to write files to arbitrary locations on the filesystem via uploading archives with path traversal sequences in filenames, potentially leading to remote code execution. The vulnerability impacts instances where file uploads and document search by content is enabled (FileSettings.EnableFileAttachments = true and FileSettings.ExtractContent = true). These configuration settings are enabled by default.

cvss

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

9.9

010

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

v3.19.9criticalAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · responsibledisclosure@mattermost.comexploitability 3.1 · impact 6

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · OSV

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-427USCWE-427USCWE-427US

affected products (30)

Products and version ranges known to be affected.

Mattermost Mattermost≤ 10.7.0 ≤10.7.2enisa_euvdEU
Mattermost Mattermost≤ 10.6.0 ≤10.6.5enisa_euvdEU
Mattermost Mattermostall versionsenisa_euvdEU
Mattermost Mattermost≤ 10.8.0 ≤10.8.0enisa_euvdEU
Mattermost Mattermost≤ 9.11.0 ≤9.11.15enisa_euvdEU
Mattermost Mattermost≤ 10.5.0 ≤10.5.5enisa_euvdEU
Mattermost Inc Mattermost10.5.0 → 10.5.5fstec_bduRU
Mattermost Inc Mattermost10.6.0 → 10.6.5fstec_bduRU
Mattermost Inc Mattermost10.7.0 → 10.7.2fstec_bduRU
Mattermost Inc Mattermost= 10.8.0fstec_bduRU
Mattermost Inc Mattermost9.11.0 → 9.11.15fstec_bduRU
mattermost mattermost server10.5.0 → 10.5.6nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server10.6.0 → 10.6.6nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server10.7.0 → 10.7.3nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server= 10.8.0nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.11.0 → 9.11.16nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Go github.com/mattermost/mattermost-server< 0.0.0-20250519205859-65aec10162f6osvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server10.5.0+incompatible → 10.5.6+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server10.6.0+incompatible → 10.6.6+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server10.7.0+incompatible → 10.7.3+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server

showing 20 of 30

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-qh58-9v3j-wcjcMattermost allows authenticated users to write files to arbitrary locations2025-06-20ghsa · osvUS
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to sanitize filenames in the archive extractor which allows authenticated users to write files to arbitrary locations on the filesystem via uploading archives with path traversal sequences in filenames, potentially leading to remote code execution. The vulnerability impacts instances where file uploads and document search by content is enabled (FileSettings.EnableFileAttachments = true and FileSettings.ExtractContent = true). These configuration settings are enabled by default.
GO-2025-3769Mattermost allows authenticated users to write files to arbitrary locations in github.com/mattermost/mattermost-server2025-07-28vendor · osvUS
Mattermost allows authenticated users to write files to arbitrary locations in github.com/mattermost/mattermost-server

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2025-06-20modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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