PatchSiren cyber security CVE debrief
CVE-2026-63102 rConfig CVE debrief
CVE-2026-63102 is a medium-severity privilege escalation vulnerability in rConfig Core before 8.2.8. The vulnerability 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. The CVE record was published on 2026-07-20T16:17:06.540Z and has not been modified since then.
- Vendor
- rConfig
- Product
- rConfig v8 Core
- CVSS
- MEDIUM 5.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-20
- Original CVE updated
- 2026-07-20
- Advisory published
- 2026-07-20
- Advisory updated
- 2026-07-20
Who should care
Administrators and users of rConfig Core before version 8.2.8 should be aware of this vulnerability and take necessary actions to mitigate it. This includes updating to version 8.2.8 or later, restricting access to the Users API, and implementing allowlist validation for role fields. Security teams and vulnerability management teams should prioritize this vulnerability based on its severity and potential impact.
Technical summary
The vulnerability is caused by a missing allowlist validation and absent admin-level authorization check in StoreUserRequest. This allows authenticated users to assign arbitrary roles to any account, potentially leading to privilege escalation. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. The affected product, rConfig Core, is vulnerable in versions before 8.2.8. The vulnerability can be exploited through the Users API during user creation or profile updates.
Defensive priority
Medium
Recommended defensive actions
- Update rConfig Core to version 8.2.8 or later
- Restrict access to the Users API
- Implement allowlist validation for role fields
- Monitor for suspicious activity
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The vulnerability was reported by Vulncheck and is publicly disclosed. The CVE record was published on 2026-07-20T16:17:06.540Z and last modified on 2026-07-20T20:16:45.460Z. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify the vulnerability's existence and potential impact on their systems.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-20T16:17:06.540Z and has not been modified since then.