What is CVE-2026-17459?

CVE-2026-17459 is a medium-severity vulnerability in Perwendel Spark, classified under Improper Link Resolution Before File Access. CVSS score: 4.3/10. Published 2026-07-26.

How severe is CVE-2026-17459?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Perwendel Spark

CVE-2026-17459

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.

EPSS: 0.003 (24.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Perwendel Spark — versions 2.9.0, 2.9.1, 2.9.2

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-17459?: CVE-2026-17459 is a medium-severity vulnerability in Perwendel Spark, classified under Improper Link Resolution Before File Access. CVSS score: 4.3/10. Published 2026-07-26.
How severe is CVE-2026-17459?: Medium severity. CVSS v3 base score is 4.3 out of 10.