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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
2026-08-19
Advisory published
2026-07-20
Advisory updated
2026-08-19

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-63102 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-63102

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-63102 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-63102

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.