CVE-2026-11403: CWE-331 Insufficient entropy in Sonatype Nexus Repository Manager
CVE-2026-11403 is a high-severity vulnerability in Sonatype Nexus Repository Manager version 3.0.0 involving insufficient entropy in format-specific API key generation. This weakness may allow a remote attacker to gain unauthorized access to repository operations as a targeted user if a format-specific API key realm is enabled and the user has an active API key. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-11403) affects Sonatype Nexus Repository Manager 3.0.0 and is caused by insufficient entropy in the generation of format-specific API keys (such as NuGet API Key, Docker Bearer Token, or npm Bearer Token). Exploitation requires that the targeted user has an active API key and that the relevant API key realm is enabled. Successful exploitation could allow a remote attacker to perform repository operations with the privileges of the targeted user. The CVSS 4.0 base score is 8.7, indicating high severity. There is no vendor advisory or patch available at this time.
Potential Impact
An attacker can remotely gain unauthorized access to repository operations by exploiting weak entropy in API key generation, potentially compromising repository integrity and confidentiality under the context of the targeted user. This could lead to unauthorized manipulation or access to repository content.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling format-specific API key realms if feasible or limiting API key usage to reduce exposure.
CVE-2026-11403: CWE-331 Insufficient entropy in Sonatype Nexus Repository Manager
Description
CVE-2026-11403 is a high-severity vulnerability in Sonatype Nexus Repository Manager version 3.0.0 involving insufficient entropy in format-specific API key generation. This weakness may allow a remote attacker to gain unauthorized access to repository operations as a targeted user if a format-specific API key realm is enabled and the user has an active API key. No official patch or remediation guidance is currently provided by the vendor.
CVSS v4.0
Score 8.7high
Affected software
pkg:maven/a:sonatype-nexus_repository_managercpe:2.3:a:sonatype:nexus_repository_manager:3.0.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.0.1:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.0.2:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.1.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.2.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.2.1:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-11403) affects Sonatype Nexus Repository Manager 3.0.0 and is caused by insufficient entropy in the generation of format-specific API keys (such as NuGet API Key, Docker Bearer Token, or npm Bearer Token). Exploitation requires that the targeted user has an active API key and that the relevant API key realm is enabled. Successful exploitation could allow a remote attacker to perform repository operations with the privileges of the targeted user. The CVSS 4.0 base score is 8.7, indicating high severity. There is no vendor advisory or patch available at this time.
Potential Impact
An attacker can remotely gain unauthorized access to repository operations by exploiting weak entropy in API key generation, potentially compromising repository integrity and confidentiality under the context of the targeted user. This could lead to unauthorized manipulation or access to repository content.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling format-specific API key realms if feasible or limiting API key usage to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Sonatype
- Date Reserved
- 2026-06-05T16:41:24.284Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a565a3968715ace43c7b5ab
Added to database: 07/14/2026, 15:48:09 UTC
Last enriched: 07/14/2026, 16:19:04 UTC
Last updated: 07/14/2026, 16:47:34 UTC
Views: 2
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