Nexus Repository 3 Sensitive Disclosure via Capability API (CVE-2026-77123)
CVE-2026-77123 Published on September 2, 2026
Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
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.
Vulnerability Analysis
CVE-2026-77123 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Insertion of Sensitive Information Into Sent Data
The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. Sensitive information could include data that is sensitive in and of itself (such as credentials or private messages), or otherwise useful in the further exploitation of the system (such as internal file system structure).
Products Associated with CVE-2026-77123
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Affected Versions
Sonatype Nexus Repository 3:- Version 3.2.0 and below 3.96.0 is affected.