Medium severity · published Sep 2, 2026
CVE-2026-77123
Nexus Repository 3 - Webhook Secret Disclosure via Capability Read API
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NR
Nexus Repository 3 · Sonatype
3.2.0 before 3.96.0 · source: vendor
NR
Nexus Repository Manager · Sonatype
3.2.0 before 3.96.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77123
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77123
Release Notes
https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html
Vendor Advisory
https://support.sonatype.com/hc/en-us/articles/54639904174099/
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