How severe is CVE-2026-3329?

CVE-2026-3329 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-3329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-3329?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-3329 have an EU (EUVD) identifier?

Yes. CVE-2026-3329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36268.

When was CVE-2026-3329 published?

CVE-2026-3329 was published on 2026-06-11 and last updated on 2026-06-17.

CVE-2026-3329

CVE-2026-3329 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36268
Weakness: CWE-307
Published: 2026-06-11
Last modified: 2026-06-17

Description

A remote unauthenticated attacker may be able to conduct credential-guessing attacks against user accounts in Sonatype Nexus Repository via authentication endpoints.

Frequently asked questions

What is CVE-2026-3329?: A remote unauthenticated attacker may be able to conduct credential-guessing attacks against user accounts in Sonatype Nexus Repository via authentication endpoints.
How severe is CVE-2026-3329?: CVE-2026-3329 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-3329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-3329?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3329 have an EU (EUVD) identifier?: Yes. CVE-2026-3329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36268.
When was CVE-2026-3329 published?: CVE-2026-3329 was published on 2026-06-11 and last updated on 2026-06-17.

References

Other CWE-307 (Improper Restriction of Excessive Authentication Attempts) vulnerabilities

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CVE-2020-37228 — Critical (CVSS 9.8): iDS6 DSSPro Digital Signage System 6.2 contains a CAPTCHA security bypass vulnerability that allows attackers to bypass…
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CVE-2026-33640 — Critical (CVSS 9.8): Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users…
CVE-2026-31851 — Critical (CVSS 9.8): Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout…

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