7.5
HIGH CVSS 3.1
CVE-2026-9563
Eclipse Parsson Denial of Service
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.

INFO

Published Date :

July 2, 2026, 7:33 a.m.

Last Modified :

July 2, 2026, 7:33 a.m.

Remotely Exploit :

Yes !

Source :

eclipse
Affected Products

The following products are affected by CVE-2026-9563 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Eclipse parsson
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH e51fbebd-6053-4e49-959f-1b94eeb69a2c
Solution
Update Eclipse Parsson to version 1.1.8 or later for a default maximum parsing limit.
  • Update Eclipse Parsson to version 1.1.8.
  • Configure the maximum parsing character limit.
  • Ensure all dependent applications are updated.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-9563 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.