How severe is CVE-2026-6009?

CVE-2026-6009 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-6009 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6009?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6009 have an EU (EUVD) identifier?

Yes. CVE-2026-6009 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30962.

When was CVE-2026-6009 published?

CVE-2026-6009 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2026-6009

CVE-2026-6009 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30962
Weakness: CWE-502
Published: 2026-05-19
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2026-6009?: Java Deserialisation Vulnerability in Jaspersoft Reports Library leads to Remote Code Execution (RCE), potentially allowing code execution on the affected system
How severe is CVE-2026-6009?: CVE-2026-6009 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-6009 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6009?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6009 have an EU (EUVD) identifier?: Yes. CVE-2026-6009 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30962.
When was CVE-2026-6009 published?: CVE-2026-6009 was published on 2026-05-19 and last updated on 2026-06-17.

References

https://community.jaspersoft.com/advisories/jaspersoft-security-advisory-may-19-2026-jaspersoft-library-cve-2026-6009-r11/

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