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CVE-2026-77125— Nexus Repository 3 - Incorrect Authorization on Blobstore Group Endpoints

Quick assessment

Affected
Sonatype Nexus Repository 3
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sonatype Nexus Repository Manager是美国Sonatype公司的一个管理软件仓库的工具。 Sonatype Nexus Repository Manager 3.19.0版本至3.96.0之前版本存在授权问题漏洞，该漏洞源于两个blobstore组管理REST API端点未正确执行预期授权检查，导致仅被授予nexus:blobstores:create权限的用户能够调用这些端点将现有blobstore转换为组blobstore，进而可在未经管理员批准的情况下修改blobsto

CVSS 7.1 · High EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Sonatype Nexus Repository 3 3.19.0< 3.96.0 affected
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I. Basic Information for CVE-2026-77125

Vulnerability Information
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Vulnerability Title
Nexus Repository 3 - Incorrect Authorization on Blobstore Group Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in Sonatype Nexus Repository 3 in which two blobstore group management REST API endpoints did not correctly enforce the intended authorization check. A user granted only the nexus:blobstores:create permission could invoke these endpoints to convert an existing blobstore into a group blobstore, an action that should require the nexus:blobstores:update permission instead. This could result in unauthorized modification of blobstore configuration without administrator approval. The nexus:blobstores:create permission is a named permission that must be explicitly granted by an administrator; it is not held by default.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Sonatype Nexus Repository Manager 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sonatype Nexus Repository Manager是美国Sonatype公司的一个管理软件仓库的工具。 Sonatype Nexus Repository Manager 3.19.0版本至3.96.0之前版本存在授权问题漏洞，该漏洞源于两个blobstore组管理REST API端点未正确执行预期授权检查，导致仅被授予nexus:blobstores:create权限的用户能够调用这些端点将现有blobstore转换为组blobstore，进而可在未经管理员批准的情况下修改blobsto
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sonatype Nexus Repository 3 3.19.0 ~ 3.96.0 cpe:2.3:a:sonatype:nexus_repository_manager:3.19.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-77125

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III. Intelligence Information for CVE-2026-77125

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Vendor Advisories for CVE-2026-77125 (1)

Vendor Pages for CVE-2026-77125 (1)

Same Patch Batch · Sonatype · 2026-09-02 · 5 CVEs total

CVE-2026-77124 7.5 HIGH Nexus Repository 3 - Script Execution Disable Setting Not Enforced
CVE-2026-77123 6.0 MEDIUM Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
CVE-2026-77121 5.3 MEDIUM Nexus Repository 3 - Denial of Service via Unbounded Maven POM Metadata Fields
CVE-2026-77122 5.3 MEDIUM Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metada

IV. Related Vulnerabilities

Same product: Nexus Repository 3
Same vendor: Sonatype
Same weakness: CWE-863

V. Comments for CVE-2026-77125

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