Vulnerability · Published Jul 2, 2026 · Assigned by eclipse
CVE-2026-9563
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Eclipse Parsson from Eclipse Foundation. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | Eclipse Parsson | 1.0.0 – through 1.1.7 |
Weakness: CWE-400, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/eclipse-ee4j/parsson/commit/134e8d101aa74c8b9302d0cb62f6ccb4912a9d0c
- https://github.com/eclipse-ee4j/parsson/pull/169
- https://repo.maven.apache.org/maven2/org/eclipse/parsson/parsson/1.1.8/
- https://github.com/eclipse-ee4j/parsson/tree/1.1.8
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/444