Auth bypass in Zongxr Supermarket
CVE-2026-103539
A weakness has been identified in ZongXR SuperMarket 1.0.0.0. This affects the function startBuy of the file instant-buy/src/main/java/com/supermarket/instantbuy/controller/InstantBuyController.java of the component Instant Buy. Executing a manipulation of the argument Username can lead to missing authentication. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Zongxr Supermarket — versions 1.0.0.0
Weakness classification (CWE)
References
- github.com/ZongXR/SuperMarket/ (product)
- github.com/ZongXR/SuperMarket/issues/30 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-103539 (third-party-advisory)
- vuldb.com/submit/957826 (third-party-advisory)
- vuldb.com/vuln/412349 (technical-description, vdb-entry)
- vuldb.com/vuln/412349/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-103539?
- CVE-2026-103539 is a medium-severity vulnerability in Zongxr Supermarket, classified under Improper Authentication. CVSS score: 5.4/10. Published 2026-10-01.
- How severe is CVE-2026-103539?
- Medium severity. CVSS v3 base score is 5.4 out of 10.