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CVE-2026-0989 - Libxml2: unbounded relaxng include recursion leading to stack overflow

CVE ID : CVE-2026-0989
Published : Jan. 15, 2026, 3:15 p.m. | 42 minutes ago
Description : 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 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.
Severity: 3.7 | LOW
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