{"id":"CVE-2026-90809","summary":"HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection","details":"A vulnerability was identified in HKUDS nanobot up to 0.2.1. The affected element is the function ExecTool._guard_command/ExecTool._spawn of the file nanobot/agent/tools/shell.py of the component ExecTool. Such manipulation leads to argument injection. It is possible to launch the attack remotely. The name of the patch is af582246f141311d574551b7571a517bcc3df750. It is best practice to apply a patch to resolve this issue.","modified":"2026-09-17T03:30:26.611354671Z","published":"2026-09-14T18:15:17.575Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-74","CWE-88"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90809.json"},"references":[{"type":"WEB","url":"https://github.com/HKUDS/nanobot/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90809.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90809"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-90809"},{"type":"ADVISORY","url":"https://vuldb.com/submit/922850"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/403311"},{"type":"REPORT","url":"https://github.com/HKUDS/nanobot/issues/5306"},{"type":"REPORT","url":"https://vuldb.com/vuln/403311/cti"},{"type":"FIX","url":"https://github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750"},{"type":"FIX","url":"https://github.com/HKUDS/nanobot/pull/5345"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hkuds/nanobot","events":[{"introduced":"c018c3fb6a5cedf2dcd7bbd0bf4fce5eb9b54bf7"},{"fixed":"af582246f141311d574551b7571a517bcc3df750"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0.2.0"},{"last_affected":"0.2.0"},{"introduced":"0.2.1"},{"last_affected":"0.2.1"}]}}],"versions":["0.2.0","0.2.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90809.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X"}]}