Vulnerability Description
In Eclipse Parsson published Maven Central artifacts before version 1.1.8, the JSON parser did not enforce a default maximum on the number of characters consumed while parsing a single JSON document. Applications that parse attacker- controlled JSON can be forced to consume excessive CPU and memory by processing very large documents, including large arrays, objects, strings, numbers, whitespace, or nested structures, resulting in a denial of service. Eclipse Parsson 1.1.8 introduces a configurable maximum parsing limit with a default limit of 15 million parser-consumed characters.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/eclipse-ee4j/parsson/commit/134e8d101aa74c8b9302d0cb62f6ccb49
- https://github.com/eclipse-ee4j/parsson/pull/169
- https://github.com/eclipse-ee4j/parsson/tree/1.1.8
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/444
- https://repo.maven.apache.org/maven2/org/eclipse/parsson/parsson/1.1.8/
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/444
FAQ
What is CVE-2026-9563?
CVE-2026-9563 is a vulnerability with a CVSS score of 7.5 (HIGH). In Eclipse Parsson published Maven Central artifacts before version 1.1.8, the JSON parser did not enforce a default maximum on the number of characters consumed while parsing a single JSON document. ...
How severe is CVE-2026-9563?
CVE-2026-9563 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9563?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.