CVE-2026-1628mediumCWE-829

Mattermost allows external websites to open within the app, exposing preload functionality to non-trusted sites.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 4.6epss 0.1%

probabilidade de exploração

0.1%top 97% das CVEs

exploração observada

nãonenhuma fonte reporta

Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596

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

Produtos afetados

Mattermost · Mattermost

Referências

https://mattermost.com/security-updates