Rocky Linux 9.6 [TuxCare] Security Update: expat / expat-devel / expat-static Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1784290625)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1784290625 advisory. - libexpat before 2.8.2 lacks handler call depth tracking for calls to XMLGetBuffer, XMLParse, XMLParseBuffer, XMLParserFree, or...

CentOS Linux 8.4 [TuxCare] Security Update: expat / expat-devel / expat-static (CENTOS8.4:CLSA-2026:1789142708)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1789142708 advisory. - libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after- free can occur. NOTE: this is...

CentOS Linux 6 [TuxCare] Security Update: expat / expat-devel (CENTOS6:CLSA-2026:1789396571)

The CentOS Linux 6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS6:CLSA-2026:1789396571 advisory. - libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after- free can occur. NOTE: this is simila...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Expat vulnerabilities (USN-8813-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8813-1 advisory. It was discovered that Expat did not correctly handle certain integer arithmetic...

USN-8813-1: Expat vulnerabilities

It was discovered that Expat did not correctly handle certain integer arithmetic. An attacker could possibly use this issue to cause a denial of service. CVE-2026-56406, CVE-2026-56407, CVE-2026-56409, CVE-2026-56410, CVE-2026-56411 It was discovered that Expat did not correctly track handler cal...

USN-8813-1 expat vulnerabilities

It was discovered that Expat did not correctly handle certain integer arithmetic. An attacker could possibly use this issue to cause a denial of service. CVE-2026-56406, CVE-2026-56407, CVE-2026-56409, CVE-2026-56410, CVE-2026-56411 It was discovered that Expat did not correctly track handler cal...

expat: libexpat: Use-after-free vulnerability due to improper handler call depth tracking

A flaw was found in libexpat. This vulnerability occurs because the library, in versions before 2.8.2, does not properly track handler call depth when certain XML parsing functions are invoked from within handlers during a policy violation. This oversight can lead to a use-after-free condition,...

SUSE CVE-2026-76957

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

CVE-2026-76957: Use After Free

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412...

PT-2026-80468

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML GetBuffer, XML Parse, XML ParseBuffer, XML ParserFree, or XML ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,...

CVE-2026-56131: Use After Free

libexpat before 2.8.2 lacks handler call depth tracking for calls to XMLResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur similar to the CVE-2026-50219 situation...