CVE-2026-25896

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

UBUNTU-CVE-2026-25896

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

CVE-2026-25896

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

CVE-2026-25896

CVE-2026-25896 affects the Node.js XML parser fast-xml-parser. From 4.1.3 up to (but not including) 5.3.5, a dot in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing shadowing of built-in entities and bypassing encoding, which can lead to XSS when parsed out...

CVE-2026-25896

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

CVE-2026-25896 fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

CVE-2026-25896

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

CVE-2026-25896 fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow...

Incorrect Regular Expression

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 Incorrect Regular Expression in the entity parsing RegEx in DOCTYPE declarations. An attacker can inject arbitrary values that override built-in XML...

Incorrect Regular Expression

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 Incorrect Regular Expression in the entity parsing RegEx in DOCTYPE declarations. An attacker can inject arbitrary values that overrid...

fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names

Entity encoding bypass via regex injection in DOCTYPE entity names Summary A dot . in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities , , &, ", ' with arbitrary values. This bypasses entity encoding and leads to...

PT-2026-21298

Name of the Vulnerable Software and Affected Versions fast-xml-parser versions 4.1.3 through 5.3.5 Description fast-xml-parser has a flaw in how it handles DOCTYPE entity names during XML parsing. Specifically, a dot . within an entity name is treated as a regex wildcard during entity replacement...

XML Entity Expansion

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 XML Entity Expansion in replaceEntitiesValue when handling excessive DOCTYPE input. An attacker can cause excessive resource consumption and make the...

Spam Campaign Abuses Atlassian Jira, Targets Government and Corporate Entities

We uncover how a campaign used Atlassian Jira Cloud to launch automated and targeted spam campaigns, exploiting trusted SaaS workflows to bypass security controls...

Advisory ROSA-SA-2026-3167

Software: jackson-databind 2.10.0 OS: ROSA Virtualization 3.0 unaffected versions = jackson-databind-2.10.0-1.0.2.rv30 affected versions jackson-databind-2.10.0-1.0.2.rv30 CVE-ID: CVE-2020-25649 BDU-ID: 2022-05602 CVE-Crit: HIGH CVE-DESC.: A vulnerability in the DOMDeserializer component of the...

USN-8022-2 expat vulnerabilities

USN-8022-1 fixed vulnerabilities in Expat. This update provides the corresponding updates for Ubuntu 24.04 LTS. Original advisory details: It was discovered that Expat incorrectly handled the initialization of parsers for external entities. An attacker could possibly use this issue to cause a...

USN-8022-2: Expat vulnerabilities

USN-8022-1 fixed vulnerabilities in Expat. This update provides the corresponding updates for Ubuntu 24.04 LTS. Original advisory details: It was discovered that Expat incorrectly handled the initialization of parsers for external entities. An attacker could possibly use this issue to cause a...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : xmltok library vulnerabilities (USN-8023-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8023-1 advisory. It was discovered that Expat, contained within the xmltok library, incorrectly handled the initialization...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 25.10 : Expat vulnerabilities (USN-8022-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8022-1 advisory. It was discovered that Expat incorrectly handled memory when parsing certain XML files. An attack...

Asian State-Backed Group TGR-STA-1030 Breaches 70 Government, Infrastructure Entities

A previously undocumented cyber espionage group operating from Asia broke into the networks of at least 70 government and critical infrastructure organizations across 37 countries over the past year, according to new findings from Palo Alto Networks Unit 42. In addition, the hacking crew has been...