Medium severity5.4NVD Advisory· Published Jun 23, 2026· Updated Jun 23, 2026

CVE-2026-56696

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Harness/Openharnessinferred2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)

Patches

Vulnerability mechanics

References

github.com/HKUDS/OpenHarness/commit/27bb93b810e9ea8fa4832eab7152eeb3b4a6bffbnvd
github.com/HKUDS/OpenHarness/pull/272nvd
www.vulncheck.com/advisories/openharness-prompt-injection-via-issue-and-pr-comments-slash-commandsnvd

News mentions

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000