CVE-2023-39615: Xmlsoft LIBXML2

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.

Affected products

• Xmlsoft LIBXML2: version 2.11.0 only

Published 2023-08-29. Last modified 2026-06-17.