Advisory severityMedium6.5Apache Software Foundation

Medium [CVE-2026-66276] Apache Qpid Proton-J: authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service

This medium-severity Apache Software Foundation advisory covers CVE-2026-66276 affecting Apache Qpid Proton-J.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-66276 Source published Aug 5, 2026Source updated Aug 7, 2026

VulniPulse record published Aug 5, 2026Record updated Aug 7, 2026

CVE-2026-66276

Affected products & platforms

Apache Software FoundationUnclassified

Open source advisory

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Summary

An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service.

This issue affects Apache Qpid Proton-J: through 0.34.1.

Users are recommended to upgrade to version 0.35.0, which fixes the issue.

Affected versions

through 0.34.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

0.35.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 0.35.0, which fixes the issue.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-66276 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-66276NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
Official documentation
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