Uncontrolled resource consumption in Eclipse Parsson
Priority HIGH 72CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-400.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00346 28th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 3 fixed, 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse Parsson | 1.0.0 – 1.1.7 | — | No fix listed | CNA |
- Eclipse Parsson VendorEclipse Foundation Affected 1.0.0 – 1.1.7 Fixed in — No fix listed CNA
Remediation
Red Hat 3 advisories
- RHSA-2026:84734 Released 2026-10-19 · Red Hat rating CriticalRHOAI 3.4.5 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
- RHSA-2026:65126 Released 2026-09-08 · Red Hat rating ImportantRHOAI 2.25.11 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
- RHSA-2026:62260 Released 2026-09-01 · Red Hat rating ImportantRed Hat OpenShift Dev Spaces 3.30.0 Release.
- Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/configbump-rhel9, registry.redhat.io/devspaces/dashboard-rhel9 +7
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Serverless | Affected | No fix yet |
| Red Hat build of Apicurio Registry 3 | Affected | No fix yet |
| Red Hat build of Debezium 3 | Affected | No fix planned: Will not fix |
| streams for Apache Kafka 3 | Affected | No fix yet |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:65126 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:84734 |
| Red Hat OpenShift Dev Spaces 3.30 | Fixed | RHSA-2026:62260 |
Not affected: 14 products
- Cryostat 4
- Red Hat Build of Keycloak
- Red Hat Data Grid 8
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift AI 3.4
- Red Hat OpenShift Dev Spaces
- Red Hat OpenShift Dev Spaces 3.30
- Red Hat build of Apache Camel - HawtIO 4
- Red Hat build of Apache Camel 4 for Quarkus 3
- Red Hat build of Apache Camel for Spring Boot 4
- Red Hat build of Quarkus
- streams for Apache Kafka 2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9563
- 2026-10-03 Alias added: GHSA-q86x-4w7f-8hrm
- 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
- 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
- 2026-11-03 Affected versions changed · Red Hat
References
Other 5
- 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
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Sources
- CVE-2026-9563 · CVE Program
- CVE-2026-9563 · NVD
- FIRST EPSS
- GHSA-q86x-4w7f-8hrm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-9563 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences