{"id":"CVE-2026-56696","aliases":["GHSA-24cw-228q-3rx9"],"url":"https://o3.security/vulnerability/CVE-2026-56696","summary":"OpenHarness - Prompt Injection via /issue and /pr_comments Slash Commands","details":"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.","published":"2026-06-23T15:36:24.281Z","modified":"2026-09-04T19:10:34.210354864Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"openharness-ai","fixedVersion":null}],"fix":{"url":"https://github.com/HKUDS/OpenHarness/commit/27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb","label":"HKUDS/OpenHarness@27bb93b"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56696.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56696"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openharness-prompt-injection-via-issue-and-pr-comments-slash-commands"},{"type":"REPORT","url":"https://github.com/HKUDS/OpenHarness/pull/272"},{"type":"FIX","url":"https://github.com/HKUDS/OpenHarness/commit/27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb"},{"type":"PACKAGE","url":"https://github.com/HKUDS/OpenHarness"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-04T19:10:34.210354864Z"}}