CVE-2026-11993
🔶 mediumSummary
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 properly enforce the limit of concurrent files being processed and handled failed files, which allows a user with permission to upload files to spawn more goroutines than intended and block the indexing of other files via uploading heavy files constantly to the server.. Mattermost Advisory ID: MMSA-2026-00696
CVSS Score
4.3
Medium
EPSS Score
0.2
Exploit Probability
Published Date
2026-09-14
First Seen: 2026-09-16
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 5.3% of all 358,566 vulnerabilities in our database.
#339,445
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 14, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
JG Heithcock
SSVC data provided by
CISA
Last Modified
2026-09-16
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE IDs (Weakness Types)