CVE-2026-102497
Last modified
CVE-2026-102497 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service. Users are recommended to upgrade to version 2.3.3, which fixes this issue.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service. Users are recommended to upgrade to version 2.3.3, which fixes this issue.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Xmlschema | < 2.3.3 |
References
- https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7kMailing List, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2026/09/29/17Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-102497?
How severe is CVE-2026-102497?
How do I fix CVE-2026-102497?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-102489Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hija…9.8
- CVE-2026-10249A vulnerability was identified in itsourcecode Online Blood …7.3
- CVE-2026-102490Zammad packages built with packager.io (DEB and RPM) could h…7.8
- CVE-2026-102491A vulnerability was identified in mahonelau kykms up to 8f13…7.3
- CVE-2026-102495Apache XmlSchema doesn't limit how deeply schema imports and…7.5
- CVE-2026-102496Apache XmlSchema doesn't limit how deeply schema structures …7.5
- CVE-2026-102499The Modern Events Calendar Lite WordPress plugin before 7.37…7.7
- CVE-2026-1025IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2…6.1
- CVE-2026-10250A security flaw has been discovered in itsourcecode Online B…7.3
- CVE-2026-102501CAI Content Credentials is affected by an Improper Input Val…5.3
- CVE-2026-102502CAI Content Credentials is affected by an Improper Verificat…5.3
- CVE-2026-102503Missing Authentication for Critical Function (CWE-306) and M…9.3
Are you affected by CVE-2026-102497?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST