EUVD-2026-76985
GHSA-4cj2-3xxr-fv5p
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Public API Gateway endpoint requires no credentials (PR:N, AV:N); impact is limited to email abuse and SES quota drain with no confidentiality loss.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
Unauthenticated access to the AWS API Gateway endpoint in simalexan/api-lambda-send-email-ses allows any remote attacker to invoke the SES.sendEmail Lambda function without credentials, abusing the deployer's AWS Simple Email Service account to send arbitrary emails. Affected deployments are those built from any commit up to bda6869aa81371d1e872242e74fe7d953edb818d, with no patched release available as the project uses rolling delivery and the maintainer has not responded to the disclosure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The API Gateway endpoint URL must be known or discoverable by the attacker - it is not secret by default and may appear in deployment logs, CI/CD output, or repository documentation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L) is broadly consistent with the actual impact: integrity is limited to sending emails from the victim's SES identity, and availability impact is limited to draining the SES sending quota or triggering AWS billing. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis; the maintainer has not responded to the disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique Authentication Bypass
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External POC / Exploit Code
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