TI-2026-40876 Aliases CVE-2026-56696 GHSA-24cw-228q-3rx9

OpenHarness - Prompt Injection via /issue and /pr_comments Slash Commands

MEDIUM 57CWE-862Published 2026-06-23 · Updated 2026-11-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

OpenHarness /issue and /pr_comments slash commands lack remote_invocable=False protection, allowing remote channel senders to write attacker-controlled Markdown into project context files. Admitted remote attackers can inject malicious content into .openharness/issue.md and .openharness/pr_comments.md files, which are subsequently injected into runtime system prompts, persistently influencing local agent behavior.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0037 31st percentileScored 2026-11-07

Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

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
HKUDS	OpenHarness	up to 0.1.9	—	Patch available	CNA
—	openharness-ai (PyPI)	up to 0.1.9	—	No fix listed	GHSA-24cw-228q-3rx9

OpenHarness VendorHKUDS Affected up to 0.1.9 Fixed in — Patch available CNA
openharness-ai (PyPI) Vendor— Affected up to 0.1.9 Fixed in — No fix listed GHSA-24cw-228q-3rx9

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:hkuds:openharness::::::::	—	—	HKUDS

cpe:2.3:a:hkuds:openharness:*:*:*:*:*:*:*:* Versions — — ·HKUDS

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-56696
2026-10-03 Alias added: GHSA-24cw-228q-3rx9

References

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-56696

Other 1

https://github.com/HKUDS/OpenHarness

TI-2026-44237 LightRAG: Missing Authentication for Critical API Functions in Default Configuration CVSS 3.1CRITICAL 9.8
TI-2026-78721 Missing authentication in HKUDS Vibe-Trading FastAPI server enables RCE CVSS 4.0CRITICAL 9.3
TI-2026-44184 Improper authentication in HKUDS LightRAG CVSS 4.0CRITICAL 9.3
TI-2026-26034 Zero-Click Indirect Prompt Injection and Authentication Bypass via Email Polling CVSS 4.0HIGH 8.9
TI-2026-62432 HKUDS nanobot before 0.3.0 Server-Side Request Forgery via WebFetchTool CVSS 4.0CRITICAL 9.2
TI-2026-25310 DeepCode 1.2.0 Path Traversal via SPA Catch-All Route in main.py CVSS 4.0HIGH 8.7

See all 47 →

Sources

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