CVE-2026-3048
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn authenticated administrator who configures or tests LDAP connectivity in Sonatype Nexus Repository Manager versions 3.0.0 through 3.91.1 may be able to initiate unintended server-side connections when interacting with a malicious LDAP server.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAn authenticated administrator with privileges to configure or test LDAP connectivity in Sonatype Nexus Repository Manager 3.x (versions 3.0.0-3.91.1) can be tricked into initiating server-side connections to attacker-controlled LDAP servers. When configuring or testing LDAP integration, the application will connect to the specified LDAP server, allowing a malicious server to receive connections from the Nexus server for network reconnaissance or further exploitation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Nexus Repository Manager installationLocate the Nexus installation directory - typically found in /opt/nexus, /usr/local/nexus, or a custom installation path. Look for the 'nexus' application and 'sonatype-work' directories.Affected if Nexus Repository Manager 3.x is installed on the system
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Check installed versionIn the Nexus installation directory, check the 'lib' folder for the JAR file containing the version, or access the Nexus web UI and view the version from the 'System' > 'Capabilities' or footer information.Affected if The installed version falls within 3.0.0 through 3.91.1
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Verify LDAP configuration capability is presentIn the Nexus web UI, navigate to Administration > Security > LDAP. Check if the LDAP configuration page is accessible or if LDAP authentication realms are enabled in Administration > Security > Realms.Affected if LDAP configuration functionality is present and accessible in the UI
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Confirm administrator privileges existReview user accounts in Administration > Security > Users and check for users with administrative roles, particularly those granted privileges to modify LDAP settings in the LDAP configuration section.Affected if Any authenticated administrator account exists with privileges to configure or test LDAP connectivity
A user is affected if Nexus Repository Manager 3.x version 3.0.0-3.91.1 is installed and an administrator account can access LDAP configuration settings.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to Nexus Repository Manager version 3.92.0 or later. Until upgraded, restrict administrative LDAP configuration privileges to only highly trusted personnel and monitor for unusual outbound LDAP connections.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-3048 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-3048 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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