Arbitrary file upload in Aircheng-Org Iwebshop-5
CVE-2026-86666
A security flaw has been discovered in aircheng-org iWebShop-5 up to 5.15. Impacted is the function upload_json/uploadFile of the file controllers/pic.php. The manipulation results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (44.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Aircheng-Org Iwebshop-5 — versions 5.0, 5.1, 5.10
Weakness classification (CWE)
References
- github.com/aircheng-org/iWebShop-5/ (product)
- github.com/aircheng-org/iWebShop-5/issues/3 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-86666 (third-party-advisory)
- vuldb.com/submit/908924 (third-party-advisory)
- vuldb.com/vuln/399757 (technical-description, vdb-entry)
- vuldb.com/vuln/399757/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-86666?
- CVE-2026-86666 is a high-severity vulnerability in Aircheng-Org Iwebshop-5, classified under Improper Access Control. CVSS score: 7.3/10. Published 2026-09-08.
- How severe is CVE-2026-86666?
- High severity. CVSS v3 base score is 7.3 out of 10.