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CVE-2026-6009

HighPublished

Jaspersoft Library Deserialisation Vulnerability

Published: May 19, 2026
Updated: May 20, 2026
Assigning CNA: Jaspersoft
Evidence observed: Aug 8, 2026

Primary CVSS

8.7/ 10High

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

0.5%

Low · next 30 days

Percentile: 42.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Java Deserialisation Vulnerability in Jaspersoft Reports Library leads to Remote Code Execution (RCE), potentially allowing code execution on the affected system

Sources

CVE-2026-6009Exploit
Automated PoC exploit for CVE-2026-6009, a Java deserialization RCE in Jaspersoft Reports <=7.0.3. Generates malicious .jasper payloads via ysoserial and delivers reverse shell through file upload endpoint.

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