CVE-2026-33036

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Versions 4.0.0-beta.3 through 5.5.5 contain a bypass vulnerability where numeric character references &NNN;, &xHH; and standard XML entities completely evade the entity expansion limits e.g.,...

CVE-2026-33036 fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Versions 4.0.0-beta.3 through 5.5.5 contain a bypass vulnerability where numeric character references &NNN;, &xHH; and standard XML entities completely evade the entity expansion limits e.g.,...

CVE-2026-33036 fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Versions 4.0.0-beta.3 through 5.5.5 contain a bypass vulnerability where numeric character references &NNN;, &xHH; and standard XML entities completely evade the entity expansion limits e.g.,...

fast-xml-parser 安全漏洞

fast-xml-parser is an open-source library developed by Natural Intelligence. It is used for quickly validating, parsing, and processing XML files without relying on C/C++-based libraries or callbacks. There are security vulnerabilities in the versions of fast-xml-parser from 4.0.0-beta.3 to 5.5.5...

PT-2026-26757

Name of the Vulnerable Software and Affected Versions @dicebear/converter versions prior to 9.4.2 Description The ensureSize function in @dicebear/converter previously used a regex-based method to limit SVG width and height attributes to 2048px to prevent denial of service. This limitation could ...

CVE-2006-10003

A flaw was found in XML::Parser, a Perl module for parsing XML. This vulnerability, an off-by-one heap buffer overflow, occurs when processing an XML file with very deep element nesting. A remote attacker could exploit this by providing a specially crafted XML file, potentially leading to memory...

0xuath-sdk-react (>=0.0.2, <=0.0.23), 1-test-gulp-1 (>=0.0.1, <=0.0.4) +15380 more potentially affected by CVE-2026-33349 via fast-xml-parser (>=4.0.0, <=5.5.6)

fast-xml-parser NPM version =4.0.0, =0.0.2, =0.0.1, =0.0.1, =1.0.0, =3.1.4, =0.1.0, =3.1.6, =0.1.0, =0.0.2, =4.11.2, =4.11.46 - @0610studio/rn-layout 0.0.1 - @0xflick/jest-dynamodb 4.0.1-pre.2 and more Source cves: CVE-2026-33349 Source advisory: SNYK:JS-FASTXMLPARSER-15699647...

Improper Validation of Specified Quantity in Input

Overview org.webjars.npm:fast-xml-parser is a Validate XML, Parse XML, Build XML without C/C++ based libraries Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input in the DocTypeReader component when the maxEntityCount or maxEntitySize configurati...

5-ifc-check-cli (1.0.0), 7ghost (>=4.11.2, <=4.11.46) +4219 more potentially affected by CVE-2026-33349 via fast-xml-parser (>=4.0.0, <=4.5.4)

fast-xml-parser NPM version =4.0.0, =4.11.2, =0.1.1, =0.0.2, =1.0.1, =1.0.0, =1.52.0, =0.0.1, =1.0.0, =0.0.1, =1.1.2 and more Source cves: CVE-2026-33349 Source advisory: OSV:GHSA-JP2Q-39XQ-3W4G...

GHSA-JP2Q-39XQ-3W4G Entity Expansion Limits Bypassed When Set to Zero Due to JavaScript Falsy Evaluation in fast-xml-parser

Summary The DocTypeReader in fast-xml-parser uses JavaScript truthy checks to evaluate maxEntityCount and maxEntitySize configuration limits. When a developer explicitly sets either limit to 0 — intending to disallow all entities or restrict entity size to zero bytes — the falsy nature of 0 in...

Entity Expansion Limits Bypassed When Set to Zero Due to JavaScript Falsy Evaluation in fast-xml-parser

Summary The DocTypeReader in fast-xml-parser uses JavaScript truthy checks to evaluate maxEntityCount and maxEntitySize configuration limits. When a developer explicitly sets either limit to 0 — intending to disallow all entities or restrict entity size to zero bytes — the falsy nature of 0 in...

@activepieces/piece-amazon-s3 (>=0.5.4, <=0.6.4), @activepieces/piece-amazon-ses (>=0.0.1, <=0.1.4) +1160 more potentially affected by CVE-2026-33349 via fast-xml-parser (>=5.0.1, <=5.5.6)

fast-xml-parser NPM version =5.0.1, =0.5.4, =0.0.1, =0.2.0, =0.1.3, =0.5.3, =0.2.1, =0.0.4, =13.1.4, =1.0.0, =1.9.12, =1.0.3, =1.1.31, =1.0.0, =1.5.0 and more Source cves: CVE-2026-33349 Source advisory: OSV:GHSA-JP2Q-39XQ-3W4G...

com.codbex.atlas:codbex-atlas-application (>=2.62.0, <=2.120.0), com.codbex.gaia:codbex-gaia-application (>=2.61.0, <=2.104.0) +25 more potentially affected by CVE-2026-33349 via org.webjars.npm:fast-xml-parser (>=4.5.3, <=5.8.0)

org.webjars.npm:fast-xml-parser MAVEN version =4.5.3, =2.62.0, =2.61.0, =2.52.0, =2.52.0, =2.51.0, =2.51.0, =3.6.0, =2.50.0, =5.0.0, =5.0.0, =11.58.0, =12.2.0, =11.58.0, =11.58.0, =14.19.0, =14.28.0 and more Source cves: CVE-2026-33349 Source advisory: SNYK:JAVA-ORGWEBJARSNPM-15699648...

Improper Validation of Specified Quantity in Input

Overview fast-xml-parser is a Validate XML, Parse XML, Build XML without C/C++ based libraries Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input in the DocTypeReader component when the maxEntityCount or maxEntitySize configuration options are...

EUVD-2006-7232

XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption double free or corruption and crashes. A :utf8 PerlIO layer, parsestream in Expat.xs could overflow the XML input buffer because Perl's read returns decoded characters while SvPV gives...

CVE-2006-10003

XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in stserialstack. In the case stackptr == stacksize - 1, the stack will NOT be expanded. Then the new value will be written at location ++stackptr, which equals stacksize and therefore falls just outside the allocat...

CVE-2006-10002

XML::Parser versions through 2.45 for Perl could overflow the pre-allocated buffer size cause a heap corruption double free or corruption and crashes. A :utf8 PerlIO layer, parsestream in Expat.xs could overflow the XML input buffer because Perl's read returns decoded characters while SvPV gives...

UBUNTU-CVE-2006-10002

XML::Parser versions through 2.45 for Perl could overflow the pre-allocated buffer size cause a heap corruption double free or corruption and crashes. A :utf8 PerlIO layer, parsestream in Expat.xs could overflow the XML input buffer because Perl's read returns decoded characters while SvPV gives...

CVE-2006-10003 XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack

XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in stserialstack. In the case stackptr == stacksize - 1, the stack will NOT be expanded. Then the new value will be written at location ++stackptr, which equals stacksize and therefore falls just outside the allocat...

CVE-2006-10003

XML::Parser (Perl) up to version 2.47 contains an off-by-one heap buffer overflow in st_serial_stack, enabling memory corruption and crashes on deeply nested XML. A patched version is available (varies by distro) — Debian fixes 2.46-2+deb11u1 and 2.47-2~deb13u1; RedHat/Debian/Linux advisories als...