RCE in Yifang Cms
CVE-2026-6633
A security flaw has been discovered in Yifang CMS up to 2.0.5. The impacted element is the function store of the file plugins/yifang_backend_account/logic/admin/L_rbac_admin.php of the component Extended Management Module. The manipulation of the argument Account results in cross site scripting. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.7% 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: +0.001
Affected products
- Yifang Cms — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/358267 (technical-description, vdb-entry)
- vuldb.com/vuln/358267/cti (signature, permissions-required)
- vuldb.com/submit/793352 (third-party-advisory)
- github.com/shiyifei999-ux/cve/issues/1 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-6633?
- CVE-2026-6633 is a low-severity vulnerability in Yifang Cms, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-20.
- How severe is CVE-2026-6633?
- Low severity. CVSS v3 base score is 3.5 out of 10.