Is CVE-2026-56696 actively exploited?

No active exploitation of CVE-2026-56696 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-56696 be exploited remotely?

Yes. CVE-2026-56696 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-56696?

CVE-2026-56696 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-56696

CWE-862Published: June 23, 2026· Updated: Jun 23, 2026

5.4

CVSS v3.1

EPSS:0.22%probability of exploitation in 30 daysPercentile:11.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-56696 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.