CVE-2026-14644 Sonatype CVE debrief

Who should care

Defenders responsible for Nexus Repository 3 instances, particularly those with versions 3.19.0 to 3.94.0, should assess exposure and prioritize remediation. Restricting access to privilege management and monitoring for suspicious activity are recommended.

Why it matters

CVE-2026-14644 is a high-severity privilege escalation vulnerability in Nexus Repository 3's REST privileges API. Defenders should assess exposure, prioritize remediation, and verify inventory for vulnerable versions.

• Verify inventory for vulnerable versions to prioritize remediation
• Restrict access to privilege management to limit exploitation
• Monitor for suspicious activity related to privilege escalation
• Escalate privileges to full administrator could lead to full system compromise

Technical summary

CVE-2026-14644 is a high-severity vulnerability in Nexus Repository 3's REST privileges API. An authenticated user with permission to manage privileges could escalate their access to full administrator under certain role configurations by exploiting a type-confusion flaw in the privilege update endpoint. The vulnerability has a CVSS score of 8.6 and is classified as CWE-843. Affected product deployments should be verified in managed environments. Defenders should assess exposure, prioritize remediation, and verify inventory for vulnerable versions.

Defensive priority

Remediate vulnerable Nexus Repository 3 instances, verify inventory for versions 3.19.0 to 3.94.0, and restrict access to privilege management.

Recommended defensive actions

• Remediate vulnerable Nexus Repository 3 instances by upgrading to version 3.95.0 or later
• Verify inventory for versions 3.19.0 to 3.94.0 and restrict access to privilege management
• Monitor for suspicious activity related to privilege escalation
• Restrict access to privilege management to limit exploitation
• Verify affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Sonatype's release notes and vendor advisory offer additional context. The vulnerability affects Nexus Repository 3 versions 3.19.0 to 3.94.0. Defenders should verify inventory for vulnerable versions and assess exposure. Evidence is limited to public CVE and NVD records, and vendor advisories. No additional facts are claimed.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.