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Remote Code Execution via License Deserialization in Sonatype Nexus Repository 3

IdentifiersCVE-2026-10748CWE-502· Deserialization of Untrusted Data

CVE-2026-10748 is a high-severity authenticated remote code execution vulnerability in Sonatype Nexus Repository 3 affecting versions before 3.92.0. According to the provided content, an authenticated user who has the nx-licensing-create privilege can upload a specially crafted license file, which results in arbitrary operating system command execution as the Nexus process user. The provided context explicitly characterizes the issue as occurring via license deserialization, indicating unsafe handling of attacker-controlled serialized data during license file processing.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated attacker with the required privilege to execute arbitrary operating system commands in the security context of the Nexus Repository process user. This can lead to full compromise of the Nexus application instance, unauthorized access to repository data, tampering with hosted artifacts, theft of credentials or configuration data accessible to the process, installation of persistence mechanisms, and potential pivoting to the underlying host or adjacent systems depending on the privileges and environment of the Nexus process account.

Mitigation

If you can’t patch tonight, do this now.

Until remediation is completed, restrict assignment of the nx-licensing-create privilege to the minimum necessary set of trusted administrators, review and reduce accounts that can upload license files, and monitor or temporarily disable license upload functionality where operationally feasible. Increase auditing around administrative actions and license file uploads to detect attempted exploitation.

Remediation

Patch, then assume compromise.

Upgrade Sonatype Nexus Repository 3 to version 3.92.0 or later. Apply Sonatype-provided patches or vendor security advisories immediately for all affected deployments. Validate that all Nexus Repository 3 instances are no longer running versions prior to 3.92.0.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
SonatypeNexus Repository Managerapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app
What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-10748
NVD
nvd.nist.gov/vuln/detail/CVE-2026-10748
MITRE CWE · CWE-502
Deserialization of Untrusted Data
help.sonatype.com
help.sonatype.com/en/sonatype-nexus-repository-3-92-0-release-notes.html
support.sonatype.com
support.sonatype.com/hc/en-us/articles/52335766035603