CVE-2026-26015 Unauthenticated RCE in DocsGPT MCP STDIO Configuration
An unauthenticated attacker can achieve remote code execution in DocsGPT by bypassing MCP test validation via a malicious payload.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-26015?
CVE-2026-26015 is a critical command injection vulnerability in arc53 DocsGPT, published on 29 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-77
Which versions are affected by CVE-2026-26015?
It affects 1 product.
Products include Arc53 Docsgpt.
How do I fix CVE-2026-26015?
No fix has been published for CVE-2026-26015 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-26015 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26015 exists.
Sources
Also known as GHSA-gcrq-f296-2j74.