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Vulnerability record · CVE-2026-3199 · published 8 April 2026

CVE-2026-3199: Sonatype nexus repository manager deserialization of untrusted data vulnerability

Sonatype · Nexus Repository Manager

A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an authenticated attacker with task creation permissions to execute arbitrary code, bypassing the nexus.scripts.allowCreation security control.

9.4 CVSS 4.0 Critical EPSS 0.77% · top 46.2% CWE-502 · Deserialization of untrusted data
9.4CVSS 4.0 base score
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
18 Sep 2026Last modified by NVD

Description

A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an authenticated attacker with task creation permissions to execute arbitrary code, bypassing the nexus.scripts.allowCreation security control.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://help.sonatype.com/en/sonatype-nexus-repository-3-91-0-release-notes.html Release Notes
https://support.sonatype.com/hc/en-us/articles/50615414548499 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-7238Sonatype Nexus Repository Manager incorrect access control allows RCESonatype Nexus Repository Manager before 3.15.0 has incorrect access control, and the vendor advisory describes it as missing access controls leading…KEVEPSS 77%analysed9.8CVE-2019-9629Sonatype nexus repository manager improper authentication vulnerabilitySonatype Nexus Repository Manager before 3.17.0 establishes a default administrator user with weak defaults (fixed credentials).EPSS 1.5%9.8CVE-2017-17717Sonatype nexus repository manager broken cryptographic algorithm vulnerabilitySonatype Nexus Repository Manager through 2.14.5 has weak password encryption with a hardcoded CMMDwoV value in the LDAP integration feature.EPSS 0.71%9.2CVE-2026-5189Sonatype nexus repository manager hard-coded credentials vulnerabilityCWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allows an unauthenticated attacker with net…EPSS 0.62%8.9CVE-2026-17601Sonatype nexus repository manager missing authorization vulnerabilityA user holding a permission to update privilege definitions could modify a wildcard privilege already assigned to their own role to grant broader per…EPSS 0.29%8.8CVE-2020-15871Sonatype nexus repository manager vulnerabilitySonatype Nexus Repository Manager OSS/Pro version before 3.25.1 allows Remote Code Execution.EPSS 2.2%8.8CVE-2020-11753Sonatype nexus repository manager incorrect authorization vulnerabilityAn issue was discovered in Sonatype Nexus Repository Manager in versions 3.21.1 and 3.22.0. It is possible for a user with appropriate privileges to …EPSS 1.7%8.8CVE-2019-5475Sonatype nexus repository manager os command injection vulnerabilityThe Nexus Yum Repository Plugin in v2 is vulnerable to Remote Code Execution when instances using CommandLineExecutor.java are supplied vulnerable da…EPSS 18%

Source: NIST National Vulnerability Database (record CVE-2026-3199), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.