CVE-2026-15814mediumCWE-409

Uploading a crafted image causes excessive memory allocation in the Mattermost Server

13Vexday Risk Score

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

ssvc Trackcvss 6.5epss 0.2%

probabilidade de exploração

0.2%top 85% das CVEs

exploração observada

nãonenhuma fonte reporta

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to limit the amount of memory allocated when decoding uploaded image files which allows an authenticated user to cause excessive server memory consumption and potential denial of service via uploading a specially crafted image as a profile picture, channel file attachment, team icon, or custom brand image. Mattermost Advisory ID: MMSA-2026-00719

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

Produtos afetados

Mattermost · Mattermost

Referências

https://mattermost.com/security-updates