Vulnerabilities (CVE)

Filtered by vendor Xmlsoft Subscribe
Filtered by product Libxml2
Total 101 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-28484 2 Debian, Xmlsoft 2 Debian Linux, Libxml2 2025-05-30 N/A 6.5 MEDIUM
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.
CVE-2022-23308 6 Apple, Debian, Fedoraproject and 3 more 44 Ipados, Iphone Os, Mac Os X and 41 more 2025-05-05 4.3 MEDIUM 7.5 HIGH
valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.
CVE-2022-40303 3 Apple, Netapp, Xmlsoft 22 Ipados, Iphone Os, Macos and 19 more 2025-04-29 N/A 7.5 HIGH
An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE 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.
CVE-2022-40304 3 Apple, Netapp, Xmlsoft 22 Ipados, Iphone Os, Macos and 19 more 2025-04-28 N/A 7.8 HIGH
An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.
CVE-2017-5969 1 Xmlsoft 1 Libxml2 2025-04-20 2.6 LOW 4.7 MEDIUM
libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML document. NOTE: The maintainer states "I would disagree of a CVE with the Recover parsing option which should only be used for manual recovery at least for XML parser.
CVE-2017-9049 1 Xmlsoft 1 Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.
CVE-2017-9048 1 Xmlsoft 1 Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.
CVE-2016-4483 3 Debian, Oracle, Xmlsoft 3 Debian Linux, Solaris, Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.
CVE-2017-16931 1 Xmlsoft 1 Libxml2 2025-04-20 7.5 HIGH 9.8 CRITICAL
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
CVE-2017-8872 1 Xmlsoft 1 Libxml2 2025-04-20 6.4 MEDIUM 9.1 CRITICAL
The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4 allows attackers to cause a denial of service (buffer over-read) or information disclosure.
CVE-2017-16932 1 Xmlsoft 1 Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.
CVE-2017-9050 1 Xmlsoft 1 Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.
CVE-2017-9047 1 Xmlsoft 1 Libxml2 2025-04-20 5.0 MEDIUM 7.5 HIGH
A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.
CVE-2015-6838 2 Php, Xmlsoft 2 Php, Libxml2 2025-04-12 5.0 MEDIUM 7.5 HIGH
The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation after the principal argument loop, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6837.
CVE-2016-1834 6 Apple, Canonical, Debian and 3 more 14 Iphone Os, Mac Os X, Tvos and 11 more 2025-04-12 9.3 HIGH 7.8 HIGH
Heap-based buffer overflow in the xmlStrncat function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.
CVE-2015-8035 4 Apple, Canonical, Debian and 1 more 7 Iphone Os, Mac Os X, Tvos and 4 more 2025-04-12 2.6 LOW N/A
The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.
CVE-2015-8242 5 Apple, Canonical, Hp and 2 more 12 Iphone Os, Mac Os X, Tvos and 9 more 2025-04-12 5.8 MEDIUM N/A
The xmlSAX2TextNode function in SAX2.c in the push interface in the HTML parser in libxml2 before 2.9.3 allows context-dependent attackers to cause a denial of service (stack-based buffer over-read and application crash) or obtain sensitive information via crafted XML data.
CVE-2015-5312 6 Apple, Canonical, Debian and 3 more 13 Iphone Os, Mac Os X, Tvos and 10 more 2025-04-12 7.1 HIGH N/A
The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data, a different vulnerability than CVE-2014-3660.
CVE-2016-9318 3 Canonical, Xmlsec Project, Xmlsoft 3 Ubuntu Linux, Xmlsec, Libxml2 2025-04-12 4.3 MEDIUM 5.5 MEDIUM
libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.
CVE-2016-2073 3 Canonical, Debian, Xmlsoft 3 Ubuntu Linux, Debian Linux, Libxml2 2025-04-12 4.3 MEDIUM 6.5 MEDIUM
The htmlParseNameComplex function in HTMLparser.c in libxml2 allows attackers to cause a denial of service (out-of-bounds read) via a crafted XML document.