PT-2026-25683 · Mattermost · Mattermost

Daw10 · Publicado 2026-02-13 · Atualizado 2026-03-27 · CVE-2026-2457

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:L/A:N

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.3.0 and earlier Mattermost versions 11.2.2 and earlier Mattermost versions 10.11.10 and earlier

Description The software does not properly sanitize client-supplied post metadata. This allows an authenticated attacker to spoof permalink embeds, impersonating other users by sending crafted PUT requests to the post update API endpoint, ''/api/v1/posts/{post id}''. The vulnerable parameter is the post metadata within the PUT request.

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

Correção

Origin Validation Error

Enumeração de Fraquezas

CWE-346

Identificadores relacionados

BDU:2026-06572

CVE-2026-2457

GHSA-PH22-FW5M-W2Q9

GO-2026-4732

SUSE-SU-2026:1135-1

Produtos afetados

Mattermost

Referências · 151

• https://github.com/mattermost/mattermost · Nota
• https://github.com/mattermost/mattermost/commit/9efe617be8b8f1d036e12721e8e73b69a543ed34 · 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