CVE-2026-17603: Nexus Repository 3 did not sufficiently restrict which HikariCP connection-pool properties could be set through the…
CVE-2026-17603 · Severity: high · CVSS 8.8 · Published 2026-08-07
Nexus Repository 3 did not sufficiently restrict which HikariCP connection-pool properties could be set through the DataStore configuration API. A user holding the nx-datastores-update permission could set the connectionInitSql property to execute arbitrary SQL against the configured database on every new connection. On the default H2 database backend, this could be leveraged to achieve remote code execution as the Nexus process user.
No. Junglewise Threat Intelligence has no report of CVE-2026-17603 being exploited in the wild.
How severe is CVE-2026-17603?
High severity, with a CVSS score of 8.8, published 7 August 2026.
Which products and versions are affected?
Sonatype Nexus Repository Manager. The advisory does not name versions.
Is there a fix for CVE-2026-17603?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-17603?
Check whether you run Sonatype Nexus Repository Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.