Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API (CVE-2026-77123) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77123

Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API

Answer in brief

CVE-2026-77123 records a Unknown severity vulnerability in Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API. The current sources do not mark it as known exploited. The current feed maps Sonatype/Nexus Repository 3 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 2, 2026Updated Sep 2, 2026Source checked Sep 2, 2026First seen by HOL Sep 2, 2026Material review Sep 2, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Sonatype/Nexus Repository 3 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Sonatype/Nexus Repository 3generic	>=3.2.0 <3.96.0	3.96.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Sonatype/Nexus Repository 3.
Review the reported fix. Update Sonatype/Nexus Repository 3 to 3.96.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 2, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.