Medium severity · published Oct 16, 2026
CVE-2026-111661
waynboot-mall through 2.0.0 Missing Authentication via /callback/email Mail Endpoint
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
waynboot-mall · wayn111
through 2.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111661
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111661
github.com
https://github.com/wayn111/waynboot-mall/blob/v2.0.0/waynboot-mobile-api/src/main/java/com/wayn/mobile/api/controller/callback/EmailController.java#L32-L42
github.com
https://github.com/wayn111/waynboot-mall/blob/v2.0.0/waynboot-mobile-api/src/main/java/com/wayn/mobile/framework/config/SecurityConfig.java#L66
hackmd.io
https://hackmd.io/@hieuPenguinnn/waynboot-mall-unauth-callback-order-forgery-cancel-mail-relay
www.vulncheck.com
https://www.vulncheck.com/advisories/waynboot-mall-through-2.0.0-missing-authentication-via-callback-email-mail-endpoint
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