CVE-2026-0989 — Libxml2: unbounded relaxng include recursion leading to stack overflow
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolvi…
Published: 2026-01-15 · CVSS: 3.7 · CVSS 3.1
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7