A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

The version of AIX installed on the remote host is prior to APAR IJ58140. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ58140 advisory.

  - A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML     Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could     exploit this by providing a malicious document, leading to a type confusion error that causes the     application to crash. This results in a denial of service (DoS), making the affected system or application     unavailable. (CVE-2026-6732)

  - A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are     handled. The parser does not enforce a limit on inclusion depth when resolving nested <include>     directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This     may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)

  - A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in     the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references     itself. A remote attacker could exploit this configuration-dependent issue by providing a specially     crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a     segmentation fault, causing a Denial of Service (DoS) by crashing affected applications. (CVE-2026-0990)

  - A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when     processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream     catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to     redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application     availability, resulting in a denial-of-service condition. (CVE-2026-0992)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AIX installed on the remote host is prior to APAR IJ58124. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ58124 advisory.

  - A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML     Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could     exploit this by providing a malicious document, leading to a type confusion error that causes the     application to crash. This results in a denial of service (DoS), making the affected system or application     unavailable. (CVE-2026-6732)

  - A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are     handled. The parser does not enforce a limit on inclusion depth when resolving nested <include>     directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This     may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)

  - A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in     the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references     itself. A remote attacker could exploit this configuration-dependent issue by providing a specially     crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a     segmentation fault, causing a Denial of Service (DoS) by crashing affected applications. (CVE-2026-0990)

  - A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when     processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream     catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to     redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application     availability, resulting in a denial-of-service condition. (CVE-2026-0992)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AIX installed on the remote host is prior to APAR IJ58306. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ58306 advisory.

  - A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML     Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could     exploit this by providing a malicious document, leading to a type confusion error that causes the     application to crash. This results in a denial of service (DoS), making the affected system or application     unavailable. (CVE-2026-6732)

  - A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are     handled. The parser does not enforce a limit on inclusion depth when resolving nested <include>     directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This     may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)

  - A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in     the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references     itself. A remote attacker could exploit this configuration-dependent issue by providing a specially     crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a     segmentation fault, causing a Denial of Service (DoS) by crashing affected applications. (CVE-2026-0990)

  - A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when     processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream     catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to     redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application     availability, resulting in a denial-of-service condition. (CVE-2026-0992)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AIX installed on the remote host is prior to APAR IJ58122. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ58122 advisory.

  - A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML     Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could     exploit this by providing a malicious document, leading to a type confusion error that causes the     application to crash. This results in a denial of service (DoS), making the affected system or application     unavailable. (CVE-2026-6732)

  - A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are     handled. The parser does not enforce a limit on inclusion depth when resolving nested <include>     directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This     may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)

  - A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in     the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references     itself. A remote attacker could exploit this configuration-dependent issue by providing a specially     crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a     segmentation fault, causing a Denial of Service (DoS) by crashing affected applications. (CVE-2026-0990)

  - A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when     processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream     catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to     redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application     availability, resulting in a denial-of-service condition. (CVE-2026-0992)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML     Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could     exploit this by providing a malicious document, leading to a type confusion error that causes the     application to crash. This results in a denial of service (DoS), making the affected system or application     unavailable. (CVE-2026-6732)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
318324	AIX : Multiple Vulnerabilities (IJ58140)	Nessus	AIX Local Security Checks	high
318323	AIX : Multiple Vulnerabilities (IJ58124)	Nessus	AIX Local Security Checks	high
318322	AIX : Multiple Vulnerabilities (IJ58306)	Nessus	AIX Local Security Checks	high
318321	AIX : Multiple Vulnerabilities (IJ58122)	Nessus	AIX Local Security Checks	high
310046	Linux Distros Unpatched Vulnerability : CVE-2026-6732	Nessus	Misc.	high

Detections

Analytics

CVE-2026-6732

high

Tenable Plugins

high

high

high

high

high