Quick answers
- Is CVE-2026-88391 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88391 being exploited in the wild.
- How severe is CVE-2026-88391?
- Informational severity, published 5 October 2026.
- Which products and versions are affected?
- Dromara Northstar 9.1.1 and earlier.
- Is there a fix for CVE-2026-88391?
- Yes: fixed in <UNKNOWN>. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-88391 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-88391?
- Check whether you run Dromara Northstar at an affected version. 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.
How to fix
- Fixed in: <UNKNOWN>
Technical details
The H2 Console is exposed at /h2-console but the application's authentication interceptor only protects /northstar/**, allowing unauthenticated access. The embedded H2 database uses default credentials (sa / empty password). An attacker can create a custom SQL alias via CREATE ALIAS and execute arbitrary system commands through Runtime.getRuntime().exec(), achieving pre-authentication RCE as the process user.
Affected products
- dromara Northstar 9.1.1 and earlier
Timeline
- 2026-10-05: disclosed