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Vulnerabilities CVE-2026-56696

CVE-2026-56696

Medium
Open
TLP:CLEAR

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

AI Analysis

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Description

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.

Details

CVSS Score
5.3
EPSS Score
0.22%

12.2th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jun 23, 2026
Last Modified
Jul 14, 2026
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