Linux Distros Unpatched Vulnerability : CVE-2026-24515

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In libexpat before 2.7.4, XMLExternalEntityParserCreate does not copy unknown encoding handler user data. CVE-2026-24515 Note that Nessus relies on the presence...

MiracleLinux 8 : expat-2.2.5-15.el8_10 (AXSA:2024-8843:06)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-8843:06 advisory. libexpat: Negative Length Parsing Vulnerability in libexpat CVE-2024-45490 libexpat: Integer Overflow or Wraparound CVE-2024-45491 libexpat: integer...

MiracleLinux 8 : xmlrpc-c-1.51.0-10.el8_10 (AXSA:2024-8980:02)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2024-8980:02 advisory. libexpat: Integer Overflow or Wraparound CVE-2024-45491 Tenable has extracted the preceding description block directly from the MiracleLinux security advisor...

MiracleLinux 7 : expat-2.1.0-15.0.1.el7.AXS7 (AXSA:2024-8927:07)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-8927:07 advisory. CVE-2024-45490: Reject negative length for XMLParseBuffer in xmlparse.c CVE-2024-45491: Detect integer overflow in dtdCopy on 32-bit platforms...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: mingw-expat (UTSA-2026-004806)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004806 advisory. An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XMLParseBuffer. Tenable has extracted the preceding description...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: mingw-expat (UTSA-2026-004808)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004808 advisory. An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for mgroupSize on 32-bit platforms where UINTMAX equals...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: mingw-expat (UTSA-2026-004807)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004807 advisory. An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms where UINTMAX equals SIZEMA...

MiracleLinux 8 : expat-2.2.5-17.el8_10 (AXSA:2025-9859:02)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-9859:02 advisory. libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat CVE-2024-8176 Tenable has extracted the preceding description block directly...

Security Bulletin: IBM HTTP Server, which is bundled with WebSphere Remote Server, is affected by multiple vulnerabilities due to libexpat and the included Apache HTTP Server

Summary IBM HTTP Server is shipped with IBM WebSphere Remote Server. Information about security vulnerabilities affecting IBM HTTP Server has been published in a security bulletin Vulnerability Details Refer to the security bulletins listed in the Remediation/Fixes section Affected Products and...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : mozjs60 (SUSE-SU-2026:0044-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0044-1 advisory. - CVE-2024-45492: embedded expat: detect integer overflow in function nextScaffoldPart bsc123003...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

PT-2026-25632

Name of the Vulnerable Software and Affected Versions libexpat versions prior to 2.7.5 Description The software contains a flaw where a NULL pointer dereference can occur within the setContext function when retrying an operation after a previous out-of-memory condition. Recommendations Update...

EulerOS Virtualization 2.13.0 : expat (EulerOS-SA-2025-2608)

According to the versions of the expat package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted fo...

Security Bulletin: Due to use of libexpat , IBM Sterling Connect:Direct Web Services is affected by large memory allocations issue.

Summary libexpat is used by IBM Sterling Connect:Direct Web Services CVE-2025-59375. Vulnerability Details CVEID:CVE-2025-59375 DESCRIPTION: libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. CWE:CWE-770:...

Security Bulletin: IBM HTTP Server is affected by multiple vulnerabilities

Summary IBM HTTP Server used by IBM WebSphere Application Server is affected by multiple vulnerabilities due to libexpat and the included Apache HTTP Server. Vulnerability Details CVEID:CVE-2025-66200 DESCRIPTION: moduserdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP...

EulerOS 2.0 SP13 : expat (EulerOS-SA-2025-2499)

According to the versions of the expat package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for...

expat: Integer overflow in defineAttribute in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash...