CVE-2026-63102 json
rConfig Core < 8.2.8 Privilege Escalation via Users API role field
published 3mo ago modified 18d ago also EUVD-2026-45979
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- rConfig rConfig v8 Core 8.2.8
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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 |
Affected products
- rConfig rConfig v8 Core
Classification
- Weakness
-
- CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes
References
-
github.com
/rconfig/rconfig/releases/tag/core-8.2.8
patch, release-notes, product
-
github.com
/rconfig/rconfig/pull/325
issue-tracking, patch
-
github.com
/rconfig/rconfig/commit/84822f4051ed97d651b1b4d191c6da2aa8c3c037
patch
-
vulncheck.com
/advisories/rconfig-privilege-escalation-via-users-api-role-field
third-party-advisory, patch, release-notes
Sources
- CVE List CVE-2026-63102
- NVD CVE-2026-63102
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