JasperReports Library Community Edition: Deserialization of Untrusted Data
CVE-2026-6009 is a high-severity deserialization of untrusted data vulnerability in JasperReports Library Community Edition from Jaspersoft, with a CVSS 4.0 base score of 8.7 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected JasperReports Library Community Edition versions: 7.0.6 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.52% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of JasperReports Library Community Edition you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on community.jaspersoft.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Jaspersoft | JasperReports Library Community Edition | 7.0.6 and earlier | Not stated |
| Jaspersoft | Jaspersoft Studio Community Edition | 7.0.6 and earlier | Not stated |
| Jaspersoft | JasperReports Server | 10.0.0 and earlier | Not stated |
| Jaspersoft | JasperReports Library Professional | 10.0.0 and earlier | Not stated |
| Jaspersoft | Jaspersoft Studio Professional | 10.0.0 and earlier | Not stated |
| Jaspersoft | JasperReports IO Professional | 10.0.0 and earlier | Not stated |
| Jaspersoft | JasperReports IO At-Scale | 10.0.0 and earlier | Not stated |
| Jaspersoft | JasperReports Web Studio | 10.0.1 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- HighSerious loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- NoneNo loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- NoneNo loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: 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. Scored by CNA.
Official description
Java Deserialisation Vulnerability in Jaspersoft Reports Library leads to Remote Code Execution (RCE), potentially allowing code execution on the affected system
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in JasperReports Library Community Edition
- 9.8 Critical severity
Recent Deserialization of Untrusted Data vulnerabilities
- 8.8 High severity
- 10.0 Critical severity
- 7.1 High severity
- 9.2 Critical severity
- 8.6 High severity
- 9.8 Critical severity
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