{"id":"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.","aliases":["GHSA-24cw-228q-3rx9","PYSEC-2026-3880"],"modified":"2026-09-10T12:25:37.097640108Z","published":"2026-06-23T15:36:24.281Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56696.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-862"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hkuds/openharness","events":[{"introduced":"0"},{"fixed":"27bb93b810e9ea8fa4832eab7152eeb3b4a6bffb"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.1.9"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.1.9","v0.1.8","v0.1.7","v0.1.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56696.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}