CVE-2026-17599Network attack vector

Authenticated administrator takeover via unchecked onboarding state

Published Aug 7, 2026 · Updated Aug 7, 2026

Unverified password change in Sonatype Nexus Repository 3.17.0 through 3.94.x allows remote authenticated users to reset the administrator password. The change-admin-password endpoint trusts a local onboarding artifact without verifying that onboarding remains active, then leaves existing sessions valid. An account with the nexus:* permission and network access can replace the administrator password while retaining concurrent administrative sessions.

CVSS severity6.9
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unverified password change in Sonatype Nexus Repository 3.17.0 through 3.94.x allows remote authenticated users to reset the administrator password. The change-admin-password endpoint trusts a local onboarding artifact without verifying that onboarding remains active, then leaves existing sessions valid. An account with the nexus:* permission and network access can replace the administrator password while retaining concurrent administrative sessions.

The record

CVE
CVE-2026-17599
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
Sonatype
Product
Nexus Repository
Classifications
CWE-620, T1098
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.17.0 <3.95.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Sonatype · Nexus Repositoryversion=3.17.0 <3.95.0

Published CVSS scores

6.9SonatypeCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-620Unverified Password Change
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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