PT-2026-25702 · Mattermost · Mattermost

Winfunc · Publicado 2026-02-13 · Atualizado 2026-03-27 · CVE-2026-25783

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Média

Vetor base

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.11.x through 10.11.10 Mattermost versions 11.2.x through 11.2.2 Mattermost versions 11.3.x through 11.3.0

Description The software does not properly validate User-Agent header tokens. This allows an authenticated attacker to cause a request panic by using a specially crafted User-Agent header. The User-Agent header is the target of this issue.

Recommendations Update Mattermost to a version later than 10.11.10. Update Mattermost to a version later than 11.2.2. Update Mattermost to a version later than 11.3.0.

Correção

DoS

Enumeração de Fraquezas

CWE-1287

Identificadores relacionados

BDU:2026-06574

CVE-2026-25783

GHSA-2V3W-6G35-5F9V

GO-2026-4725

SUSE-SU-2026:1135-1

Produtos afetados

Mattermost

Referências · 151

• https://github.com/mattermost/mattermost · Nota
• https://github.com/mattermost/mattermost/commit/1346cf529aef0672c39a56ec10d1b8a9c8fb387d · Nota
• https://suse.com/security/cve/CVE-2026-22545 · Nota
• https://suse.com/security/cve/CVE-2026-33281 · Nota
• https://suse.com/security/cve/CVE-2026-33132 · Nota
• https://suse.com/security/cve/CVE-2026-33191 · Nota
• https://suse.com/security/cve/CVE-2026-33066 · Nota
• https://suse.com/security/cve/CVE-2026-33315 · Nota
• https://suse.com/security/cve/CVE-2026-33247 · Nota
• https://suse.com/security/cve/CVE-2026-33620 · Nota
• https://suse.com/security/cve/CVE-2026-32595 · Nota
• https://suse.com/security/cve/CVE-2026-2458 · Nota
• https://suse.com/security/cve/CVE-2026-33222 · Nota
• https://suse.com/security/cve/CVE-2026-33675 · Nota
• https://suse.com/security/cve/CVE-2026-33192 · Nota