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CVE-2026-102496

7.5 · HIGH

Apache XmlSchema doesn't limit how deeply schema structures can be nested when it builds its schema model, so a malicious schema can make parsing recurse until the stack overflows.

Published Sep 29, 2026apacheCWE-674EPSS 0.53%

Overview

CVE-2026-102496 is a high-severity vulnerability affecting apache xmlschema. It was published on September 29, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Apache XmlSchema doesn't limit how deeply schema structures can be nested when it builds its schema model, so a malicious schema can make parsing recurse until the stack overflows. This causes a denial of service.

Users are recommended to upgrade to version 2.3.3, which fixes this issue.

Remediation

Check the references section for vendor advisories and patches from apache. Update xmlschema to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
apachexmlschema>= 0, < 2.3.3Affected

References

Reflists.apache.org/thread/9z1vg8wmvwpfw748fb2nb55w4hgbnxolRefwww.openwall.com/lists/oss-security/2026/09/29/16

How CyberStrike helps

Frequently asked questions

What is CVE-2026-102496?

CVE-2026-102496 is a high-severity vulnerability affecting apache xmlschema. It was published on September 29, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-102496?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-102496?

Check the references section for vendor advisories and patches from apache. Update xmlschema to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-102496?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-102496 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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