PT-2026-25686 · Mattermost · Mattermost

Juho Forsén · Publicado 2026-02-13 · Atualizado 2026-03-27 · CVE-2026-26246

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 10.11.0 through 10.11.10 Mattermost versions 11.2.0 through 11.2.2 Mattermost versions 11.3.0

Description The software does not properly limit memory allocation when processing PSD image files. This allows an authenticated attacker to exhaust server memory and cause a denial of service by uploading a specially crafted PSD file.

Recommendations Update Mattermost to a version beyond 10.11.10. Update Mattermost to a version beyond 11.2.2. Update Mattermost to a version beyond 11.3.0.

Correção

DoS

Resource Exhaustion

Enumeração de Fraquezas

CWE-400

CWE-789

Identificadores relacionados

BDU:2026-06568

CVE-2026-26246

GHSA-44MV-JQ72-GJ49

GO-2026-4727

SUSE-SU-2026:1135-1

Produtos afetados

Mattermost

Referências · 150

• https://github.com/mattermost/mattermost · Nota
• https://github.com/mattermost/mattermost/commit/38b413a27604e8721fbe008f8ec4b4e6c47ad4f0 · 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26246 · 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