CVE-2026-113374
Nexus Repository 3 - Privilege Escalation via Rut Auth Capability Creation
Sonatype Nexus Repository 3 does not require realm administration permission when a user creates a Rut Auth capability. A user who holds only the capability creation permission (nexus:capabilities:create) can create this capability, which turns on header-based authentication for the instance. A remote client can then authenticate as an existing user, including an administrator, without credentials.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: SonatypeAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Nexus Repository 3 Sonatype |
≥ 3.0.0; < 3.98.0 (affected, semver)
Other versions: unaffected |
CNA: Sonatype |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.6 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: Sonatype |
| 4.0 / 8.6 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: 103e4ec9-0a87-450b-af77-479448ddef11 |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.htmlCNA: Sonatype · patch
- https://support.sonatype.com/hc/en-us/articles/56616522124435/CNA: Sonatype · vendor-advisory
- https://help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.html103e4ec9-0a87-450b-af77-479448ddef11
- https://support.sonatype.com/hc/en-us/articles/56616522124435/103e4ec9-0a87-450b-af77-479448ddef11
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