--- title: "CVE-2026-102495: Apache XmlSchema - Denial of Service" description: "Apache XmlSchema contains a denial of service caused by unlimited nested schema imports and includes, letting attackers cause stack overflow by recursive parsing, exploit requires malicious schema input." url: https://panop.io/threat-heartbeat/CVE-2026-102495/ --- # CVE-2026-102495 Apache XmlSchema - Denial of Service Apache XmlSchema contains a denial of service caused by unlimited nested schema imports and includes, letting attackers cause stack overflow by recursive parsing, exploit requires malicious schema input. CVSS base score 7.5 /10 High CISA KEV Not listed Public exploit None known Authentication Not required EPSS 0.53% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102495) ## Details Type Denial of Service Impact Denial Of Service CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Published 29 September 2026 Updated 15 October 2026 Weakness [CWE-674](https://cwe.mitre.org/data/definitions/674.html) ## Vendor fix Upgrade to version 2.3.3. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-102495](https://nvd.nist.gov/vuln/detail/CVE-2026-102495) - [https://lists.apache.org/thread/l339q3oldm0cd2lph4b6f93fd07x9g6s](https://lists.apache.org/thread/l339q3oldm0cd2lph4b6f93fd07x9g6s) - [http://www.openwall.com/lists/oss-security/2026/09/29/15](http://www.openwall.com/lists/oss-security/2026/09/29/15) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)