CVE-2023-5876: Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled server to mount a Denial Of…

PriorityP425medium5.3CVSS 3.1

AVNACHPRLUINSUCNINAH

EPSS

0.49%

39.0th percentile

Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled server to mount a Denial Of Service.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
google	chrome_chrome	—	—
mattermost	mattermost_desktop	< 5.5.1	5.5.1
mattermost	mattermost_desktop	<= 5.5.0	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.