CVE-2026-17459: Perwendel Spark

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability was determined in perwendel spark up to 2.9.4. This vulnerability affects the function staticFiles.externalLocation of the file src/main/java/spark/resource/ExternalResourceHandler.jav of the component SparkJava. Executing a manipulation can lead to symlink following. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• Perwendel Spark: version 2.9.0 only; version 2.9.1 only; version 2.9.2 only; version 2.9.3 only; version 2.9.4 only

Published 2026-07-26. Last modified 2026-07-27.