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CVE-2026-77122— Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metadata via Group Repository Permissions

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 3.38.0至3.96.0之前版本存在授权问题漏洞，该漏洞源于REST API仓库详情端点的授权缺陷，导致对组仓库具有读或浏览权限的账户可通过直接请求成员仓库名称检索其无直接权限的成员仓库元数据，并可能泄露内部上游主机名。

CVSS 5.3 · Medium EPSS 0.28% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
Sonatype Nexus Repository 3 3.38.0< 3.96.0 affected
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I. Basic Information for CVE-2026-77122

Vulnerability Information
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Vulnerability Title
Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metadata via Group Repository Permissions
Source: CVE Program / CVE List V5
Vulnerability Description
An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve metadata for member repositories on which it held no direct permission, by requesting the endpoint directly for the member repository name. For proxy repositories, the disclosed metadata includes the configured remote URL, which may reveal internal upstream hostnames. This includes the anonymous user if it has been granted this permission; whether the anonymous user holds this permission depends on the role and permission configuration of the specific installation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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 3.38.0至3.96.0之前版本存在授权问题漏洞，该漏洞源于REST API仓库详情端点的授权缺陷，导致对组仓库具有读或浏览权限的账户可通过直接请求成员仓库名称检索其无直接权限的成员仓库元数据，并可能泄露内部上游主机名。
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 3.38.0 ~ 3.96.0 cpe:2.3:a:sonatype:nexus_repository_manager:3.38.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-77122

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III. Intelligence Information for CVE-2026-77122

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Vendor Advisories for CVE-2026-77122 (1)

Vendor Pages for CVE-2026-77122 (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-2026-77125 7.1 HIGH Nexus Repository 3 - Incorrect Authorization on Blobstore Group Endpoints
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

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-77122

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