CVE-2026-90513 Details
Description
A flaw has been found in simalexan api-lambda-send-email-ses up to bda6869aa81371d1e872242e74fe7d953edb818d. This issue affects the function SES.sendEmail of the file template.yml of the component API Gateway Endpoint. This manipulation of the argument toEmails/ccEmails/replyToEmails/subject/message causes missing authentication. It is possible to initiate the attack remotely. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
A vulnerability exists in the Simalexan Api-Lambda-Send-Email-SES component, specifically in versions up to commit bda6869aa81371d1e872242e74fe7d953edb818d. The issue arises from an unauthenticated API Gateway POST endpoint '/send' that allows remote attackers to send emails through Amazon SES by manipulating email parameters such as 'toEmails', 'ccEmails', 'replyToEmails', 'subject', and 'message'. The Lambda function processes these parameters without proper validation or authentication, leading to potential abuse of email sending capabilities.
To address this vulnerability, it is recommended to implement authentication for the '/send' endpoint, add input validation for email parameters, and replace the current SES permissions with a least-privilege IAM policy. Additionally, monitoring and abuse controls should be established to prevent exploitation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 13, 2026CISA-ADP
Assessed Sep 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/simalexan/api-lambda-send-email-ses/ | [email protected] | ProductSource CodeVendor |
| https://github.com/simalexan/api-lambda-send-email-ses/issues/9 | [email protected] | ExploitIssue TrackingTechnical AnalysisVendor |
| https://vuldb.com/cve/CVE-2026-90513 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/911886 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/403100 | [email protected] | Permission Required |
| https://vuldb.com/vuln/403100/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| simalexan api-lambda-send-email-ses | <= bda6869aa81371d1e872242e74fe7d953edb818d |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 14, 2026 | CVE Modified | CISA-ADP |
| Sep 13, 2026 | New CVE Received | [email protected] |