Vulnerability in Rconfig
CVE-2026-63102
rConfig Core before 8.2.8 contains a privilege escalation vulnerability that allows authenticated users to assign arbitrary roles to any account by submitting an unvalidated role field through the Users API during user creation or profile updates. Attackers can exploit the missing allowlist validation and absent admin-level authorization check in StoreUserRequest to mass-assign the Admin role directly to the User model, granting access to privileged features. rConfig Pro and Enterprise are not affected.
Vulnerability class: Mass Assignment
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Rconfig — versions 0
- Rconfig V8 Core — versions 0
Weakness classification (CWE)
References
- github.com/rconfig/rconfig/commit/84822f4051ed97d651b1b4d191c6da2aa8c3c037 (Patch, patch)
- github.com/rconfig/rconfig/pull/325 (issue-tracking, Patch, patch, Issue Tracking)
- github.com/rconfig/rconfig/releases/tag/core-8.2.8 (release-notes, Product, Release Notes, patch)
- www.vulncheck.com/advisories/rconfig-privilege-escalation-via-users-api-role-fi… (Patch, Third Party Advisory, Release Notes, third-party-advisory)
Frequently asked questions
- What is CVE-2026-63102?
- CVE-2026-63102 is a medium-severity vulnerability in Rconfig, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 5.4/10. Published 2026-07-20.
- How severe is CVE-2026-63102?
- Medium severity. CVSS v3 base score is 5.4 out of 10.