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P4Verified
CVE-2026-16251: Mattermost 11.10.0 through 11.10.0, 11.7.0 through 11.7.9, 11.9.0 through 11.9.1, 11.8.0 through 11.8.5
CVE-2026-16251. CVSS 3.1 base score 6.5 (MEDIUM, Vendor/CNA).
Affected technology
Mattermost · 11.10.0 through 11.10.0, 11.7.0 through 11.7.9, 11.9.0 through 11.9.1, 11.8.0 through 11.8.5
Mattermost
Description’s affected range: versions 11.10.x <= 11.10.0
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
A remote attacker can cause memory exhaustion on the server via a crafted oversized image response. Vendor/CNA’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality and integrity impact as none; availability impact as high.
- CWE
- CWE-770
- CCR priority
- 26.0 /100 (P4)
- CVSS 3.1
- 6.5 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-16 09:25:50.391882+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-16251.html