CVE-2026-86431

Publication date 9 September 2026

Last updated 9 September 2026

Ubuntu priority

Cvss 3 Severity Score

(league/commonmark (thephpleague/commonmark) versions >= 2.7.0 and < 2. ...)

Show unmaintained releases

Base score 6.9 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Attack requirements	None
Privileges required	None
User interaction	None
Vulnerable system - Confidentiality impact	Low
Vulnerable system - Integrity impact	Low
Vulnerable system - Availability impact	None
Subsequent system - Confidentiality impact	Low
Subsequent system - Integrity impact	Low
Subsequent system - Availability impact	None

Scores

Parameter	Value
Base score	6.9 · Medium
Base + Threat score	-
Base + Environmental score	-
Base + Threat + Environmental score	-

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Base score 7.2 · High

Base metrics

Scores

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N