TI-2026-81162 Aliases CVE-2026-117558 GHSA-f89j-j8x9-5xwf

OS command injection in ai-sdlc MCP Server via repo argument

HIGH 72CWE-78Published 2026-10-27 · Updated 2026-11-02

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

The ai-sdlc plugin MCP server through 0.31.2 from ai-sdlc-framework contains an OS command injection flaw (CWE-78). Unvalidated input in the repo argument is interpolated into gh commands run through execSync(). A local attacker with low privileges can supply shell metacharacters so that prompt-injected agents run commands as the MCP server user.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00687 52nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ai-sdlc-framework	ai-sdlc	up to 0.31.2	—	No fix listed	CNA

ai-sdlc Vendorai-sdlc-framework Affected up to 0.31.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for ai-sdlc.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

2026-10-27 Threatist record created from CVE-2026-117558
2026-10-27 Alias added: GHSA-f89j-j8x9-5xwf
2026-10-28 Priority changed: MEDIUM → LOW
2026-11-02 CISA SSVC decision points changed
2026-11-02 Priority changed: LOW → HIGH

References

Patch 1

https://github.com/ai-sdlc-framework/ai-sdlc/commit/717d7ecf068b714f65955e50fcf5cb4f9a0b5070

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences