Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-201.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Nexus Repository 3 (Sonatype) Fixed in 3.96.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Sonatype Nexus Repository 3 3.96.0
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2026-53868 Nexus Repository 3 - Script Execution Disable Setting Not EnforcedPriority LOW 36
- TI-2026-53869 Nexus Repository 3 - Incorrect Authorization on Blobstore Group EndpointsPriority LOW 31
- TI-2026-53866 Incorrect authorization in Sonatype Nexus Repository 3Priority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77123
- 2026-10-03 Alias added: GHSA-m6f2-q3rh-xfc5
References
More Sonatype Nexus Repository Manager vulnerabilities
- TI-2019-05133 Sonatype Nexus Repository Manager before 3.15.0 has Incorrect Access Control. KEVCVSS 3.1CRITICAL 9.8
- TI-2019-03883 OS command injection in Nexus Repository Manager CVSS 3.0HIGH 8.8
- TI-2026-02763 Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection CVSS 4.0CRITICAL 9.4
- TI-2026-04532 Nexus Repository 3 - Hardcoded Credential in Internal Database Component CVSS 4.0CRITICAL 9.2
- TI-2021-15218 Multiple XSS issues exist in Sonatype Nexus Repository Manager 3 before 3.33.0. CVSS 3.1MEDIUM 5.4
- TI-2019-07044 Sonatype Nexus Repository Manager before 3.17.0 establishes a default administrator user… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-77123 · CVE Program
- CVE-2026-77123 · NVD
- FIRST EPSS
- GHSA-m6f2-q3rh-xfc5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences