Widely used Nexus Repository; credential guessing could enable account compromise and supply-chain risk.
CVE-2026-3329
Remote unauthenticated credential guessing on Nexus Repository auth endpoints.
Is CVE-2026-3329 being exploited?
Not confirmed. CVE-2026-3329 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-3329?
CVE-2026-3329 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-3329?
Yes. A fix has been recorded for CVE-2026-3329. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-3329 affect?
CVE-2026-3329 affects Sonatype Nexus Repository. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-3329?
Upgrade to patched version when available; restrict auth endpoint access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Credential guessing could lead to unauthorized access to Nexus Repository and exposure of artifacts.
Immediate action required
- affected>= 3.0.0 and < 3.93.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.