CVE-2026-56696

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.4 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

June 23, 2026

Last Modified

June 23, 2026

CWE ID

CWE-862

Source

NVD

Vendor

HKUDS

Product

OpenHarness

External References

https://github.com/HKUDS/OpenHarness/commit/27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb
https://github.com/HKUDS/OpenHarness/pull/272
https://www.vulncheck.com/advisories/openharness-prompt-injection-via-issue-and-pr-comments-slash-commands
https://github.com/HKUDS/OpenHarness/pull/272

CVE-2026-56696

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment