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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.

在 Sonatype Nexus Repository 3 中发现了一个漏洞，其涉及两个用于 blobstore 组管理的 REST API 端点未正确执行预期的授权检查。仅被授予 权限的用户可以调用这些端点，将现有的 blobstore 转换为组 blobstore，而该操作本应要求 权限。这可能导致未经管理员批准，即可对 blobstore 配置进行未授权修改。 权限是一种具名权限，必须由管理员显式授予，并非默认拥有。

CVSS 7.1 · High

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

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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