CVE-2026-3113Disclosure(mattermost / mattermost_server)

LOWCVSS 5.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local users on the server to be able to read contents of the bulk export.. Mattermost Advisory ID: MMSA-2026-00593

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://mattermost.com/security-updates

Weakness type (CWE)

CWE-732

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

mattermost_server

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 1 classified signal
General: 1 classified signal
2 total mentions across 1 day

Affected systems

Vendors

mattermost

Products

mattermost_server

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 1d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud194d
General
🚨*CVE* CVE-2026-3113 Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local… https://www.cve.org/CVERecord?id=CVE-2026-3113 ----- Traducción: CVE-2026-3113 Mat… http://infoflow.cloud`
Post summary
The post notes that certain Mattermost versions do not set proper permissions on bulk export downloads, potentially exposing data to local users. No PoC, exploit, patch, or active usage claims are provided.
0000028
65 followersView on X
CVE@CVEnew194d
Disclosure
CVE-2026-3113 Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local… https://www.cve.org/CVERecord?id=CVE-2026-3113
Post summary
The brief notice reports that certain Mattermost versions inadequately set permissions on bulk export files, potentially enabling local privilege escalation. No PoC, exploit, or patch information is provided.
00000254
56.9K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	mattermost	mattermost_server	-	-	-
App	mattermost	mattermost_server	11.4.0	-	-

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