← AI agent vulnerabilities

CVE-2026-91988

atomic-agents-stack

8.1
Severity
High
Published
September 15, 2026
Last modified
September 24, 2026

atomic-agents-stack before 1.1.0 accepts cleartext HTTP schemes in the HTTP MCP server-registry backend factory, allowing network man-in-the-middle attackers to rewrite catalog responses. Attackers can inject arbitrary command and argument values that are spawned as local subprocesses by MCPClientPool to achieve code execution on the agent host.

CVSS vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness

References

CVE-2026-91988 on NVD

Listed in

HighMCP servers

Related CVEs

Oct 21
CVE-2026-1141237.5

The officially documented Azure one-click deployment uses infrastructure/azuredeploy.json and infrastructure/main.bicep to default the apiKey parameter to an empty string and pass it to the App Service…

Oct 21
CVE-2026-1140907.1

Trigger.dev cli-v3 from 3.0.0 before 4.5.4 contains a missing authentication vulnerability in the trigger dev --mcp server, which binds all network interfaces and exposes the /sse and /messages endpoints.

Oct 20
CVE-2026-83555.4

IBM ContextForge MCP Gateway 0.1.0 through 1.0.5 is vulnerable to a server-side request Forgery (SSRF) that allows authenticated users with gateway creation privileges to perform arbitrary HTTP POST…

Oct 20
CVE-2026-1137313.3

djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance.

Oct 20
CVE-2026-1133785.3

A security flaw has been discovered in mcollina mcp-ripgrep up to 0.4.0.

Oct 20
CVE-2026-1117678.6

The experimental tasks feature (taskStore) did not check which session created a task.