Arbitrary file upload in Shopex Ecshop
CVE-2026-82921
A weakness has been identified in ShopEx ECShop up to 2.5.1. This affects the function check_img_type of the file admin/pack.php. Executing a manipulation of the argument pack_img can lead to unrestricted upload. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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 (39.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% 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: 0.005 · change: +0.002
Affected products
- Shopex Ecshop — versions 2.5.0, 2.5.1
Weakness classification (CWE)
References
- vuldb.com/vuln/397301 (technical-description, vdb-entry)
- vuldb.com/vuln/397301/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82921 (third-party-advisory)
- vuldb.com/submit/879229 (third-party-advisory)
- uvxbywu62qm.feishu.cn/wiki/TNENwNItlitygtk2uABcj02lndc (exploit)
Frequently asked questions
- What is CVE-2026-82921?
- CVE-2026-82921 is a high-severity vulnerability in Shopex Ecshop, classified under Improper Access Control. CVSS score: 7.3/10. Published 2026-08-31.
- How severe is CVE-2026-82921?
- High severity. CVSS v3 base score is 7.3 out of 10.