CVE-2026-6009 Jaspersoft Library Deserialisation Vulnerability
A deserialization flaw in the JasperReports library allows attackers to execute arbitrary code on affected systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-6009?
CVE-2026-6009 is a high-severity unsafe deserialization vulnerability in Jaspersoft JasperReports IO At-Scale, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Java Deserialisation Vulnerability in Jaspersoft Reports Library leads to Remote Code Execution (RCE), potentially allowing code execution on the affected system
Weakness: CWE-502
Which versions are affected by CVE-2026-6009?
2 open source packages ship an affected version, including net.sf.jasperreports:jasperreports.
| Package | Affected | Fixed in |
|---|---|---|
net.sf.jasperreports:jasperreports Maven | All versions | 7.0.7 |
net.sf.jasperreports:jasperreports Maven | All versions | 7.0.7 |
How do I fix CVE-2026-6009?
Upgrade net.sf.jasperreports:jasperreports to 7.0.7 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-6009 being exploited?
There is no known exploitation of CVE-2026-6009 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9wxq-mwqw-8hhg, UBUNTU-CVE-2026-6009.