Vulnerability · Published Aug 7, 2026 · Assigned by Sonatype

CVE-2026-17603Nexus Repository 3 - HikariCP connectionInitSql Injection RCE via DataStore Configuration API

High 8.7

In plain English

A high-severity code injection in Nexus Repository 3 from Sonatype. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.9%top 41.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Sonatype	Nexus Repository 3	3.20.0 – before 3.95.0

Weakness: CWE-94 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

In plain English

Official description

Affected products (as reported)

References