JLSEC-2025-77 An issue was discovered in libxml2 before 2.10.3

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XMLPARSEHUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault...

JLSEC-2025-89 In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the...

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API Python bindings because of an incorrect return value. This occurs in xmlPythonFileRead and xmlPythonFileReadRaw because of a difference between bytes and characters...

JLSEC-2025-84 An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7

An issue was discovered in xmllint from libxml2 before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c...

JLSEC-2025-82 libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation...

libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when...

JLSEC-2025-90 In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a...

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a heap-based buffer under-read. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used...

JLSEC-2025-70 A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors...

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest...

JLSEC-2025-86 libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables...

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be...

JLSEC-2025-69 GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in...

GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e...

JLSEC-2025-91 Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a...

Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPath processing functions xmlXPathRunEval, xmlXPathCtxtCompile, and xmlXPathEvalExpr were resetting recursion depth to zero before...

JLSEC-2025-81 Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the...

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...

PT-2025-46049

In libxml2 before 2.9.14, several buffer handling functions in buf.c xmlBuf and tree.c xmlBuffer don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer...

PT-2025-46044

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest...

PT-2025-46048

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes...

PT-2025-46053

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c...

PT-2025-46058

An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free...

PT-2025-46063

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API Python bindings because of an incorrect return value. This occurs in xmlPythonFileRead and xmlPythonFileReadRaw because of a difference between bytes and characters...

PT-2025-46062

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer dereference in xmlPatMatch in pattern.c...

PT-2025-46066

Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPath processing functions xmlXPathRunEval, xmlXPathCtxtCompile, and xmlXPathEvalExpr were resetting recursion depth to zero before...

PT-2025-46056

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...

PT-2025-46061

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be...