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CVE-2025-11776

MediumCVSS 4.3/10Last modified Oct 19, 2026

Description

Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= <11, <= <11

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Nov 14, 2025
Last modified: Oct 19, 2026
NVD status: Analyzed

Related CVEs from 2025

CVE-2025-117774.3Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member AP CVE-2025-117789.8Stack-based buffer overflow in Circutor SGE-PLC1000/SGE-PLC50 v0.9.2. This vulnerability allows an attacker to remotely exploit memory corru CVE-2025-117799.8Stack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2. The 'SetLan' function is invoked when a new configuration CVE-2025-11785.6A vulnerability was found in GNU Binutils 2.43. It has been declared as problematic. Affected by this vulnerability is the function bfd_putl CVE-2025-117809.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimit CVE-2025-117817.8Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The affected firmware contains a hardcoded static authenticati CVE-2025-117829.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The 'ShowDownload()' function uses “sprintf()” to format CVE-2025-117839.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The vulnerability is found in the 'AddEvent()' function CVE-2025-117849.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'ShowMeterDatabase()' function, there is an unlim CVE-2025-117859.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'ShowMeterPasswords()' function, there is an unli CVE-2025-117869.8Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'SetUserPassword()' function, the 'newPassword' p CVE-2025-117878.8Command injection vulnerability in the operating system in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2 through the 'GetDNS()', 'CheckPing()' and '

CVE-2025-11776: Medium severity, CVSS 4.3 | Vulnix