CVE-2026-77121: CWE-770 Allocation of Resources Without Limits or Throttling in Sonatype Nexus Repository 3
Description
A user account with permission to deploy artifacts to a hosted Maven repository could upload a POM file containing an oversized metadata field. This causes future attempts to list or browse that repository's components to permanently fail until an administrator repairs the underlying data. Only the targeted repository is affected; other repositories and overall server health remain unaffected.
CVSS v4.0
Score 5.3medium
Affected software
Sonatype
Nexus Repository 3
cpe:2.3:a:sonatype:nexus_repository_manager:3.26.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.26.1:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.27.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.28.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.28.1:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.29.0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) in Sonatype Nexus Repository 3 version 3.26.0 involves allocation of resources without limits or throttling. A user account with deploy permissions can upload a POM file with an oversized metadata field, which corrupts the repository metadata. As a result, any subsequent attempts to list or browse components in that repository fail permanently until manual administrative repair is performed. The problem is isolated to the affected repository and does not degrade the entire server or other repositories.
Potential Impact
The vulnerability causes permanent failure in listing or browsing components of the affected Maven repository, disrupting normal repository operations for that repository only. Other repositories and the overall server remain unaffected. There is no indication of privilege escalation, data leakage, or server compromise. The impact is limited to availability of the specific repository's component listing.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should monitor repository metadata integrity and be prepared to repair corrupted repository data manually if this issue occurs. Restrict deploy permissions to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Sonatype
- Date Reserved
- 2026-08-20T13:00:23.220Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a985b8aacd9273b4983832f
Added to database: 09/02/2026, 17:23:22 UTC
Last enriched: 09/07/2026, 13:36:22 UTC
Last updated: 10/18/2026, 18:48:24 UTC
Views: 95
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