CVE-2020-13638 in the critical feed json
lib/crud/userprocess.php in rConfig 3.9.x before 3.9.7 has an authentication bypass, leading to administrator account creation.
published 2020-11-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5880
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 76.9%
- EPSS 76.9% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
lib/crud/userprocess.php in rConfig 3.9.x before 3.9.7 has an authentication bypass, leading to administrator account creation. This issue has been fixed in 3.9.7.
Patch / fix
- rconfig rconfig 3.9.7
Exploit prediction
76.85% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template rConfig 3.9 - Authentication Bypass(Admin Login) nuclei detection template
- theguly.github.io https://theguly.github.io/2020/09/rconfig-3.9.4-multiple-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
theguly.github.io
/2020/09/rconfig-3.9.4-multiple-vulnerabilities/
exploit, third-party-advisory
Sources
- CVE List CVE-2020-13638
- NVD CVE-2020-13638
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.