Auth bypass in Wayn111 Waynboot-Mall
CVE-2026-111661
waynboot-mall through 2.0.0 contains a missing authentication vulnerability that allows unauthenticated attackers to send arbitrary email by calling the anonymously mapped /callback/email endpoint. Attackers can POST caller-supplied subject, content, and recipient to EmailController.sendEmail, sending messages from the operator's SMTP account for phishing, spam, and mail quota exhaustion.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
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
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/waynboot-mall-unauth-callback-order-forgery-cancel-mai… (third-party-advisory)
- github.com/wayn111/waynboot-mall/blob/v2.0.0/waynboot-mobile-api/src/main/java/… (technical-description)
- github.com/wayn111/waynboot-mall/blob/v2.0.0/waynboot-mobile-api/src/main/java/… (technical-description)
- VulnCheck Advisory: waynboot-mall through 2.0.0 Missing Authentication via /callback/email Mail Endpoint (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111661?
- CVE-2026-111661 is a medium-severity vulnerability in Wayn111 Waynboot-Mall, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-10-16.
- How severe is CVE-2026-111661?
- Medium severity. CVSS v3 base score is 5.3 out of 10.