CVE-2026-77121 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-77121
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.25 Probability of exploitation activity being observed over the next 30 days (17th percentile)
CVSS score for CVE-2026-77121
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.5 Medium
Products affected by CVE-2026-77121
Nexus Repository Manager 3.29.1-01
Nexus Repository Manager 3.29.2-02
Nexus Repository Manager 3.30.0-01
Nexus Repository Manager 3.30.1-01
Nexus Repository Manager 3.31.0-01
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-77121 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
CN 551 48.21%
US 216 18.90%
DE 94 8.22%
IE 51 4.46%
KR 34 2.97%
SG 28 2.45%
FR 27 2.36%
RU 18 1.57%
HK 13 1.14%
IN 12 1.05%

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CVE-2026-77121 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 849 87.71%
Telecommunications 103 10.64%
Education 7 0.72%
Finance 5 0.52%
Retail 2 0.21%
Media/Entertainment 1 0.10%
Business Services 1 0.10%

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