What’s Vulnerable › Vulnerabilities

CVE-2026-17459: perwendel spark SparkJava ExternalResourceHandler.jav staticFiles.externalLocation symlink

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-26 · updated 2026-10-24
• Weakness: CWE-59

Description

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: 2.9.0, 2.9.1, 2.9.2, 2.9.3, 2.9.4

References

• https://github.com/perwendel/spark/
• https://github.com/perwendel/spark/issues/1296
• https://vuldb.com/cve/CVE-2026-17459
• https://vuldb.com/submit/862468
• https://vuldb.com/vuln/383321
• https://vuldb.com/vuln/383321/cti

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