Vulnerability · Published Sep 13, 2026 · Assigned by VulDB
CVE-2026-90513simalexan api-lambda-send-email-ses API Gateway Endpoint template.yml SES.sendEmail missing authentication
Medium 6.5
In plain English
A medium-severity missing authentication in api-lambda-send-email-ses from simalexan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| simalexan | api-lambda-send-email-ses | bda6869aa81371d1e872242e74fe7d953edb818d |
Weakness: CWE-306, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:R
References
- VDB-403100 | simalexan api-lambda-send-email-ses API Gateway Endpoint template.yml SES.sendEmail missing authentication vdb-entry, technical-description
- VDB-403100 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-90513 | CVE Analysis and Report third-party-advisory
- Submit #911886 | simalexan api-lambda-send-email-ses Git commit bda6869aa81371d1e872242e74fe7d953edb818d and earlier Missing Authentication third-party-advisory
- https://github.com/simalexan/api-lambda-send-email-ses/issues/9 issue-tracking
- https://github.com/simalexan/api-lambda-send-email-ses/ product