CVE-2026-77121

Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields

View on CVE.org
Published Sep 2, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical impact

The vulnerability allows an authenticated user with deploy permission to upload an oversized metadata field into a Maven POM file. Upon retrieval of the repository data, the oversized field causes the component listing and browsing operations to fail permanently. The failure is localized to the affected repository; other repositories and the overall server remain operational. The weakness arises from an inability to enforce size limits on input (CWE‑770).

Affected Systems

Affected products are Sonatype Nexus Repository 3 versions from 3.26.0 through 3.94.1, inclusive. Only these installations are vulnerable—other repository types and the host server are unaffected by the denial of service.

Risk and Exploitability

The CVSS score of 5.3 indicates moderate severity. No EPSS data is available, and the vulnerability is not listed in the CISA KEV catalog. The attack vector is inferred to be a local or remote authenticated upload via the repository's deployment API, requiring deployment privileges. Once exploited, the repository becomes unusable until an administrator repairs the corrupted metadata, creating a significant availability impact but no breach of confidentiality or integrity.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update Nexus Repository 3 to the latest release (≥3.95.0) to close the unbounded metadata field issue.
  • If an immediate upgrade is not possible, enforce stricter upload validation by configuring the repository or an intermediary proxy to reject POM files with metadata fields exceeding a defined size threshold.
  • Contact Sonatype support to repair the corrupted metadata and restore normal component listing.

Generated by OpenCVE AI on September 3, 2026 at 11:20 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
Type Values Removed Values Added
CPEs cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}
Type Values Removed Values Added
First Time appeared Sonatype nexus Repository Manager 3
Vendors & Products Sonatype nexus Repository Manager 3
Type Values Removed Values Added
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.
Title Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields
First Time appeared Sonatype
Sonatype nexus Repository Manager
Weaknesses CWE-770
CPEs 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:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.29.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.29.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.30.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.30.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.31.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.31.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.32.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.32.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.33.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.33.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.34.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.34.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.35.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.36.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.37.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.37.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.37.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.37.3:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.38.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.38.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.39.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.40.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.40.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.41.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.41.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.42.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.43.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.44.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.45.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.45.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.46.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.47.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.47.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.48.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.49.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.50.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.51.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.52.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.53.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.53.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.54.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.54.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.55.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.56.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.57.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.57.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.58.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.58.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.59.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.60.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.61.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.62.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.63.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.64.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.65.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.66.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.67.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.67.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.68.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.68.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.69.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.70.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.70.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.71.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.72.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.73.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.74.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.75.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.75.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.76.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.76.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.77.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.77.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.77.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.78.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.78.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.78.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.78.3:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.79.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.79.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.80.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.81.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.81.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.82.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.82.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.83.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.83.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.83.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.84.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.84.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.84.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.85.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.85.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.86.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.86.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.86.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.86.3:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.87.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.87.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.87.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.88.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.88.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.89.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.89.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.3:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.4:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.90.5:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.91.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.91.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.92.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.92.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.92.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.92.3:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.93.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.93.1:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.93.2:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.94.0:*:*:*:*:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager:3.94.1:*:*:*:*:*:*:*
Vendors & Products Sonatype
Sonatype nexus Repository Manager
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}
Weaknesses
  • CWE-770

    Allocation of Resources Without Limits or Throttling

Sources

Status
PUBLISHED
Assigner
Sonatype
Published
Updated
Sep 2, 2026, 5:42 PM
Reserved
Aug 20, 2026, 1:00 PM

View source JSON

Updated
Sep 2, 2026, 5:42 PM

JSON

Status
Analyzed
Published
Sep 2, 2026, 6:21 PM
Modified
Oct 7, 2026, 1:24 PM

View source JSON

No data.

Updated
Sep 3, 2026, 3:30 PM

JSON