CVE-2026-9563

high

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.

References

https://repo.maven.apache.org/maven2/org/eclipse/parsson/parsson/1.1.8/

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/444

https://github.com/eclipse-ee4j/parsson/tree/1.1.8

https://github.com/eclipse-ee4j/parsson/pull/169

https://github.com/eclipse-ee4j/parsson/commit/134e8d101aa74c8b9302d0cb62f6ccb4912a9d0c

Details

Source: Mitre, NVD

Published: 2026-07-02

Updated: 2026-07-02

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00366