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-2024-25062

CVE-2024-25062 : Affects libxml2 prior to 2.11.7 and 2.12.x prior to 2.12.5. When using the XML Reader with DTD validation and XInclude expansion, crafted XML can trigger an xmlValidatePopElement use-after-free, as described in multiple connected sources. Impact is described as an availability co...

CVE-2024-34459

The CVE-2024-34459 issue affects libxml2’s xmllint when using --htmlout, where a formatting error in error messages can trigger a buffer over-read in xmlHTMLPrintFileContext. The vulnerability concerns xmllint and the libxml2 parser before versions 2.11.8 and 2.12.x before 2.12.7. A PoC exists pe...

CVE-2020-7595

CVE-2020-7595 affects libxml2, specifically the xmlStringLenDecodeEntities function in parser.c of version 2.9.10, which can enter an infinite loop in certain end-of-file situations. Several connected advisories (e.g., ASA-202011-15) corroborate the issue and describe the impact as potential deni...

CVE-2021-3537

Summary: CVE-2021-3537 affects libxml2 up to 2.9.11. In XML mixed content parsing, errors were not propagated, causing a NULL dereference when an untrusted document is parsed in recovery mode and post-validated, with availability as the highest impact. The connected documents confirm the vulnerab...

CVE-2021-3517

CVE-2021-3517 is a libxml2 vulnerability affecting versions before 2.9.11. A flaw in the xml entity encoding functionality could allow processing of a crafted XML file to trigger an out‑of‑bounds read, with availability impact and potential confidentiality/integrity impact if memory information i...

CVE-2019-20388

CVE-2019-20388 affects libxml2 2.9.10. The Broadcom advisory BSNSA36819 confirms a memory leak in xmlSchemaValidateStream (xmlschemas.c) that can impact availability (memory exhaustion) when processing XML schemas. Affected component: libxml2’s xmlSchemaValidateStream; root cause relates to a lea...

CVE-2023-45322

The CVE-2023-45322 issue affects libxml2 up to version 2.11.5, with a use-after-free in xmlUnlinkNode (tree.c) that requires a failing memory allocation to trigger. Affected products include libxml2 libraries used in multiple distributions (Debian, Amazon Linux, Gentoo, CBLMariner, Astra Linux, e...

CVE-2019-19956

Summary (CVE-2019-19956) libxml2 before 2.9.10 contains a memory leak in xmlParseBalancedChunkMemoryRecover (parser.c) related to newDoc->oldNs. This can lead to memory not being freed (partial impact noted) and, per mapped references, contributes to DoS scenarios. The CVSS data across sources...

CVE-2022-23308

CVE-2022-23308 affects libxml2 before 2.9.13, caused by a use-after-free in ID/IDREF attributes in valid.c. The NVD data shows a CVSS 3.1 base score of 7.5 (NETWORK, PR:N, UI:N, S:U, C:N/I:N/A:H) and CVSS 2.0 base score of 4.3 (NETWORK, A:P). Connected advisories confirm the same flaw and referen...

CVE-2020-24977

CVE-2020-24977 affects GNOME libxml2 up to version 2.9.10. The issue is a global buffer over-read in xmlEncodeEntitiesInternal (libxml2/entities.c), which can lead to information disclosure or crash conditions. The vulnerability was fixed in the commit 50f06b3e. Connected advisories corroborate l...

CVE-2021-3541

CVE-2021-3541 describes a vulnerability in libxml2 where exponential entity expansion can bypass protections and cause a denial of service. The Initial Description confirms the flaw and its DoS impact, and connected documents (e.g., Astra Linux bulletin and BSNSA entries) reiterate libxml2 involv...

CVE-2021-3518

CVE-2021-3518 details (libxml2): A use-after-free exists in libxml2 before v2.9.11 when processing crafted input files through an application linked with libxml2. This can impact confidentiality, integrity, and availability. The issue is triggered by processing a specially crafted file via libxml...

CVE-2015-5312

Summary (CVE-2015-5312) A DoS via XML entity expansion was reported in libxml2 (xmlStringLenDecodeEntities in parser.c) affecting versions before 2.9.3. The issue allows a context-dependent attacker to trigger high CPU usage by processing crafted XML data, as described in the CVE entry and corrob...

CVE-2016-4658

CVE-2016-4658 affects libxml2 up to version 2.9.4 (and is noted in Apple platforms such as iOS/OS X/watchOS as affected). The issue arises from allowing namespace nodes in XPointer ranges, which can enable a remote attacker to cause arbitrary code execution or a denial of service (use-after-free/...

CVE-2022-29824

Summary: CVE-2022-29824 affects libxml2 up to version 2.9.14. Several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*) fail to check integer overflows, causing out-of-bounds memory writes when processing crafted XML files. This vulnerability also affects software that uses lib...

CVE-2022-40303

CVE-2022-40303 affects libxml2 prior to 2.10.3. When parsing multi‑gigabyte XML with XML_PARSE_HUGE enabled, integer counters can overflow and cause an access at a negative 2GB offset, typically leading to a segmentation fault. Public sources (including libxml2‑focused advisories and AWS ALAS/BSN...

CVE-2015-8035

Summary (CVE-2015-8035) : In libxml2, the xz_decomp function in xzlib.c does not properly detect compression errors, enabling a denial-of-service condition (process hang) via crafted XML data. Affected: libxml2 up to 2.9.1 (and related 2.9.x lines in later advisories) with potential impact across...

CVE-2023-28484

CVE-2023-28484 affects libxml2 up to version 2.10.3, where parsing certain invalid XSD schemas can trigger a NULL pointer dereference in xmlSchemaFixupComplexType (xmlschemas.c), potentially causing a segfault. The issue is addressed by libxml2 2.10.4 (release notes linked in connected docs). Rem...

CVE-2016-3709

CVE-2016-3709 is a vulnerability in the libxml2 HTML 4 parser. The issue arises after commit 960f0e2 and enables cross-site scripting. Public advisories confirm impact on libxml2 and list fixed versions: Debian Bullseye fixes in 2.9.10+dfsg-6.7+deb11u5; AlmaLinux notes an XSS fix; Cloud Foundry a...

CVE-2022-40304

CVE-2022-40304: libxml2 before 2.10.3 contains invalid XML entity definitions that can corrupt a hash table key, potentially triggering logic errors and, in at least one case, a double-free. Affected library is libxml2; CVSS v3.1 shows base score 7.8 (HIGH) with LOCAL access, high impact. Public ...

CVE-2018-14404

The CVE-2018-14404 entry affects libxml2 (up to 2.9.8). It describes a NULL pointer dereference in xpath.c:xmlXPathCompOpEval() when parsing an invalid XPath expression in the XPATH_OP_AND/OR case, potentially causing a denial-of-service crash for applications processing untrusted XSL inputs. Pub...

CVE-2016-5131

CVE-2016-5131 is a use-after-free in libxml2 up to version 2.9.4 (as used in Chrome before 52.0.2743.82) triggered by XPointer range-to, leading to possible denial of service and potentially other impact. Connected advisories reaffirms libxml2 as the vulnerable component and references several ve...

CVE-2017-5130

CVE-2017-5130 describes an integer overflow in libxml2’s xmlmemory.c that could enable a remote attacker to cause heap corruption via a crafted XML file. The vulnerability affects libxml2 up to version before 2.9.5 and has been observed in products such as Google Chrome (prior to 62.0.3202.62) an...

CVE-2017-15412

CVE-2017-15412 is a use-after-free in libxml2 (affected before 2.9.5) used by Chrome and other products, potentially enabling heap corruption via crafted HTML. Connected advisories also reference CVE-2018-14404 (NULL pointer dereference in xmlXPathCompOpEval) affecting libxml2 up to 2.9.8 during ...

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-2023-29469

libxml2 before 2.10.4 is affected by CVE-2023-29469 and CVE-2023-28484. The issue stems from hashing empty dict strings in crafted XML, leading to non-deterministic dict keys and memory errors such as double frees. Affected products include libxml2 implementations used in various stacks; upgrade ...

CVE-2015-6837

The vulnerability CVE-2015-6837/6838 is a NULL pointer dereference in PHP’s XSLTProcessor (ext/xsl/xsltprocessor.c) when using libxslt, triggered by valuePop() returning NULL without a check. Affected PHP versions are prior to 5.4.45, 5.5.x prior to 5.5.29, and 5.6.x prior to 5.6.13 when libxml2

CVE-2015-6838

CVE-2015-6838 affects PHP’s XSLTProcessor (ext/xsl/xsltprocessor.c). When libxml2 before 2.9.2 is used, the code does not guard the return value of valuePop(), allowing a NULL pointer dereference that can crash the application (denial of service). The vulnerability is documented as: PHP versions ...

CVE-2025-24928

CVE-2025-24928 affects libxml2 (versions before 2.12.10 and 2.13.x before 2.13.6) with a stack-based buffer overflow in xmlSnprintfElements (valid.c) that requires DTD validation for exploitation. Remediation per connected docs: upgrade libxml2 to 2.12.10+ or 2.13.6+ (e.g., via libxml2 update) an...

CVE-2023-39615

CVE-2023-39615 : Libxml2 (version 2.11.0) contains an out-of-bounds read in xmlSAX2StartElement() (/libxml2/SAX2.c) that can cause a Denial of Service when parsing a crafted XML. The vendor notes that Libxml2 does not support the legacy SAX1 interface with custom callbacks; there is a crash even ...

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-2018-9251

CVE-2018-9251 affects libxml2

CVE-2018-14567

CVE-2018-14567: libxml2 2.9.8 with LZMA support is vulnerable to denial of service via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR (infinite loop). Exploitation vector is a crafted XML payload; affected component is libxml2/xz decompression path when built with --with-lzma. Several vendo...

CVE-2016-4447

CVE-2016-4447 affects libxml2 up to version before 2.9.4. The vulnerability is in the xmlParseElementDecl function (parser.c) where a crafted file via xmlParseName can cause a heap-based buffer underread, leading to denial of service (application crash). Remediation: upgrade to libxml2 2.9.4 or n...

CVE-2022-49043

Summary: CVE-2022-49043 affects libxml2 before 2.11.0, where xmlXIncludeAddNode in xinclude.c has a use-after-free vulnerability. The vulnerability is documented across multiple connected sources (Linux distributions and advisories) and is associated with a high impact due to potential memory cor...

CVE-2017-9047

CVE-2017-9047: libxml2 contains a stack-based buffer overflow in xmlSnprintfElementContent (valid.c) when dumping element content definitions; the check uses the pre-update length, allowing writes beyond the buffer and potentially crashing programs (e.g., PHP). The provided documents describe the...

CVE-2014-3660

CVE-2014-3660 affects libxml2: parser.c allowed excessive entity expansion (billion laughs) even when entity substitution is disabled, enabling DoS via crafted XML. Public details confirm the vulnerability in libxml2 up to versions before 2.9.2. Affected component is the XML parser (parser.c) in ...

CVE-2016-4448

CVE-2016-4448 is a format-string vulnerability in libxml2 (pre-2.9.4). The connected F5 advisory confirms libxml2 is the vulnerable component across multiple BIG-IP products and lists specific BIG-IP families/versions as vulnerable, with a table guiding upgrades to non‑vulnerable releases. Impact...

CVE-2017-16932

CVE-2017-16932 affects the libxml2 parser: in versions before 2.9.5, expanding a parameter entity in a DTD can result in infinite recursion, potentially leading to a denial of service or memory exhaustion. Affected component is the libxml2 XML C parser. Connected sources corroborate the issue and...

CVE-2025-27113

Summary of CVE-2025-27113 context and public details : The vulnerability is in libxml2 (affected patterns CVE-2025-27113) with a NULL pointer dereference in xmlPatMatch (pattern.c). Public documentation indicates affected releases include libxml2 versions prior to 2.12.10 and 2.13.x prior to 2.13...

CVE-2013-2877

CVE-2013-2877 is a libxml2 out-of-bounds read vulnerability triggered by XML documents that end abruptly due to missing checks for the XML_PARSER_EOF state. It affected libxml2 up to version 2.9.0 (used in Chrome and other products) and could lead to denial of service. Remediation in the public a...

CVE-2017-9050

CVE-2017-9050 affects libxml2 (notably 2.9.4 builds such as 20904-GITv2.9.4-16-g0741801). Root cause: a heap-based buffer over-read in dict.c:xmlDictAddString, stemming from an incomplete fix for CVE-2016-1839. Impact: can cause a crash in applications using libxml2 (e.g., PHP). Public details in...

CVE-2017-18258

The CVE-2017-18258 entry affects libxml2: the xz_head function in xzlib.c (pre-2.9.6) allows remote attackers to cause a denial of service via crafted LZMA files by not restricting memory usage to a legitimate file. Impact is memory consumption/DoS; no exploit details are provided in the initial ...

CVE-2017-7376

CVE-2017-7376 is described in the connected IBM bulletin as a buffer overflow in libxml2 that allows remote code execution by exploiting an incorrect limit for port values when handling redirects. The provided documents confirm the existence of this vulnerability and its impact on libxml2, but do...

CVE-2025-32414

CVE-2025-32414 concerns libxml2 prior to 2.13.8 and 2.14.x prior to 2.14.2, where the Python bindings can trigger an out-of-bounds memory access due to an incorrect return value in the Python API. Affected code paths include xmlPythonFileRead and xmlPythonFileReadRaw, caused by a mismatch between...

CVE-2016-9318

CVE-2016-9318 affects libxml2 (versions 2.9.4 and earlier) used in XMLSec 1.2.23 and earlier. The flaw is that libxml2 does not expose a flag indicating that the current document may be read but other files may not, enabling XML External Entity (XXE) style attacks via a crafted document. Affected...

CVE-2016-3627

CVE-2016-9596, related to libxml2 used in Red Hat JBoss Core Services, allows a denial of service via crafted XML when in recovery mode. This vulnerability exists because of an incorrect fix for CVE-2016-3627 and results in stack consumption. The issue is specifically described as a DoS (stack gr...

CVE-2016-1839

CVE-2016-1839 involves libxml2 where the xmlDictAddString function in dict.c can cause a heap-based buffer over-read, leading to a denial of service. The issue affects libxml2 up to version 2.9.4 (as used in Apple iOS, macOS, tvOS, watchOS). A later linked entry (CVE-2017-9050) confirms this was ...

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...