Overview
What is CVE-2026-86137?
In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp.
CVE intelligence
CVE-2026-86137
Vulnerability intelligence
2.9LOWCVSS out of 10
What this means
Review the available evidence
CVE-2026-86137 and is rated Low severity with a CVSS score of 2.9. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEVNot listedBased on the latest collected catalog
EPSS0.1%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships