CVE-2026-10819 | BDVDB-2026-352702 Detail
MattermostMattermost
Description#
Mattermost versions 11.6.x <= 11.6.5, 10.11.x <= 10.11.20, 11.8.x <= 11.8.1, 11.7.x <= 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom emoji.. Mattermost Advisory ID: MMSA-2026-00695
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
References#
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.