CVE-2026-102495

7.5 HIGH 0.5% exploit odds Fix listed Denial of service Server

What it is

Apache XmlSchema doesn't limit how deeply schema imports and includes can be nested, 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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-09-29 12:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-06 14:38 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-29 12:17 UTC
Last modified: 2026-10-06 14:38 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-674
Record status: Analyzed

Affected

Apache Xmlschema < 2.3.3

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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Fix and advisories

https://lists.apache.org/thread/l339q3oldm0cd2lph4b6f93fd07x9g6s

References

NVD record · CVE.org record