CVE-2024-40896

CVE-2024-40896 affects libxml2 prior to 2.11.9, 2.12 prior to 2.12.9, and 2.13 prior to 2.13.3. The SAX parser can emit events for external entities even when custom SAX handlers try to override content (via checked), enabling classic XXE attacks. Connected sources reiterate the same vulnerabilit...

CVE-2024-56171

CVE-2024-56171 affects libxml2 up to 2.12.9 and 2.13.x up to 2.13.5. It is a use-after-free in the functions xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables (in xmlschemas.c). To exploit, a crafted XML document must be validated against an XML schema with certain identity constraints,...

CVE-2017-16931

CVE-2017-16931 affects libxml2 (parser.c) prior to version 2.9.5, where parameter-entity references are mishandled: the NEXTL macro calls xmlParserHandlePEReference for a '%' in a DTD name, enabling a buffer overflow and potential remote code execution. The connected details confirm the vulnerabl...

CVE-2017-8872

CVE-2017-8872 affects libxml2 and is a buffer-over-read/overflow in htmlParseTryOrFinish() in HTMLparser.c. It can allow a local attacker to cause a denial of service or information disclosure. Affected context appears in multiple IBM security bulletins for libxml2-enabled devices (e.g., IBM Blad...

CVE-2003-1564

CVE-2003-1564 involves the XML parser library (libxml2) and a failure to detect recursion during entity expansion. A crafted XML document with a large number of nested entity references can trigger a denial of service through excessive memory and CPU usage (the classic “billion laughs” scenario)....

CVE-2011-1944

CVE-2011-1944 affects libxml2 and related libraries where an integer overflow in xpath.c can cause a heap-based buffer overflow when adding a new namespace node, enabling context-dependent attackers to trigger denial of service (crash) and potentially execute arbitrary code via a crafted XML file...

CVE-2016-1834

CVE-2016-1834 describes a heap-based buffer overflow in libxml2's xmlStrncat function prior to 2.9.4, affecting Apple iOS/tvOS/watchOS and OS X before patched versions. Exploitation could lead to remote code execution or memory corruption and potential denial of service when processing crafted XM...

CVE-2017-7375

CVE-2017-7375 describes a flaw in the libxml2 parser that allows remote XML entity inclusion when default parser flags are used (no substitution/validation/DTD loading). This XXE can cause access to local files or remote resources (HTTP/FTP) depending on context, potentially expanding the attacke...

CVE-2015-8710

CVE-2015-8710 affects libxml2: denial of service and possible information disclosure from an out-of-bounds memory access when parsing an unclosed HTML comment. Publicly reported in multiple vendor advisories (IBM IMM/IMM2, RackSwitch, F5 BIG-IP, Rational DOORS, etc.). Remediation across products ...

CVE-2026-6653

CVE-2026-6653 affects GNOME libxml2, specifically the parser path libxml2’s xmlParseInternalSubset. The issue is a Use After Free in libxml2 versions 2.9.11 to 2.11.0, allowing a remote attacker to trigger a denial of service via carefully crafted XML input with improper entity resolution handlin...