cve.bz

CVE-2023-5196

6.5 mediumEPSS 0.7%

Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE
CWE-400
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-33r7-wjfc-7w98Gogithub.com/mattermost/mattermost/server/v8>=8.1.0 <8.1.18.1.1
GHSA-33r7-wjfc-7w98Gogithub.com/mattermost/mattermost/server/v8>=8.0.0 <8.0.28.0.2
GHSA-33r7-wjfc-7w98Gogithub.com/mattermost/mattermost-server/v6<7.8.107.8.10

References

Check your stackJSON