CVE-2026-17603 Nexus Repository 3 - HikariCP connectionInitSql Injection RCE via DataStore Configuration API
An authenticated user with datastore update permissions can inject SQL via HikariCP configuration to achieve remote code execution on the Nexus server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-17603?
CVE-2026-17603 is a high-severity code injection vulnerability in Sonatype Nexus Repository Manager, published on 7 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-94
Which versions are affected by CVE-2026-17603?
It affects 1 product.
Products include Sonatype Nexus Repository Manager.
How do I fix CVE-2026-17603?
Apply the vendor's patch.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-17603 being exploited?
There is no known exploitation of CVE-2026-17603 in the wild and no public exploit code.
Other vulnerabilities in Sonatype Nexus Repository Manager
- CVE-2019-7238 Sonatype Nexus Repository Manager Incorrect Access Control
- CVE-2019-9629 Hardcoded credentials in n/a
- CVE-2017-17717 Hardcoded credentials in n/a
- CVE-2026-3199 Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection
- CVE-2026-5189 Nexus Repository 3 - Hardcoded Credential in Internal Database Component
Sources
Also known as GHSA-65xx-g4qc-4g4m, MINI-rfhc-c96h-78h8, MINI-v3gj-fj27-pv9h.