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CVE-2026-77123— Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API

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 3.2.0版本至3.95.x版本存在信息泄露漏洞，该漏洞源于capability read API未能正确屏蔽webhook capability的共享密钥，导致持有nexus:capabilities:read权限的账户可以获取明文共享密钥，造成敏感信息泄露。

CVSS 6.0 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1213 · Data from Information Repositories

Affected Version Matrix 1

VendorProduct Version RangeStatus
Sonatype Nexus Repository 3 3.2.0< 3.96.0 affected
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I. Basic Information for CVE-2026-77123

Vulnerability Information
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Vulnerability Title
Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
Source: CVE Program / CVE List V5
Vulnerability Description
Nexus Repository 3 contains a sensitive information disclosure vulnerability in the capability read API. An account holding the nexus:capabilities:read privilege can retrieve the plaintext shared secret configured on a webhook capability, which is intended to be masked from all API responses. This issue affects Nexus Repository 3 versions 3.2.0 through 3.95.x, and is fixed in version 3.96.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过发送数据的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Sonatype Nexus Repository Manager 信息泄露漏洞
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 3.2.0版本至3.95.x版本存在信息泄露漏洞，该漏洞源于capability read API未能正确屏蔽webhook capability的共享密钥，导致持有nexus:capabilities:read权限的账户可以获取明文共享密钥，造成敏感信息泄露。
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 3.2.0 ~ 3.96.0 cpe:2.3:a:sonatype:nexus_repository_manager:3.2.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-77123

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III. Intelligence Information for CVE-2026-77123

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Vendor Advisories for CVE-2026-77123 (1)

Vendor Pages for CVE-2026-77123 (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-2026-77121 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-201

V. Comments for CVE-2026-77123

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