numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal.
A flaw was found in libxslt numbers.c. This vulnerability allows a use-after-free, potentially leading to memory corruption or code execution via nested XPath evaluations where an XPath context node can be modified but not restored.
Ivan Fratric discovered that Libxslt incorrectly handled certain memory operations when handling documents. A remote attacker could use this issue to cause Libxslt to crash, resulting in a denial of service, or possibly execute arbitrary code.
