Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') Affecting org.opennms:opennms-util package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGOPENNMS-18855665
- published16 Aug 2026
- disclosed13 Aug 2026
- credittinyb0y, Xanlar Agamalizade
Introduced: 13 Aug 2026
NewCVE-2026-19135 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') through the OnmsJexlUberspect.getMethod method in the Measurements REST API. An attacker can load arbitrary Java classes on the server by submitting a crafted expression that invokes Class methods on a whitelisted object, such as calling getClass().forName(...) through the expression sandbox. This lets a low-privileged authenticated user escape the intended JEXL method authorization and reach reflective class-loading behavior on the server. The impact includes unauthorized access to confidential information and compromised application integrity.