CVE-2026-71478: commonmark >= 1.5.0, <= 2.8.3

CVE-2026-71478. CVSS 3.1 base score 6.1 (MEDIUM, Vendor/CNA). EPSS 0.00355 (percentile 0.27973), scored 22-Oct-2026.

Affected technology

commonmark · >= 1.5.0, <= 2.8.3
thephpleague

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · User interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 6.1/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 01:44 UTC

CWE: CWE-79, CWE-86, CWE-692
CCR priority: 24.5 /100 (P4)
CVSS 3.1: 6.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · Vendor/CNA
EPSS: 0.00355 · percentile 0.27973 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-71478.html