{"id":"CVE-2026-43991","aliases":["EUVD-2026-29540","GHSA-fvq5-79h6-952c"],"status":"published","title":"JunoClaw: plugin-shell shell-injection bypass via substring blocklist","description":"JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00171,"percentile":0.06525,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-184","CWE-78"],"published":"2026-05-12T16:19:54Z","modified":"2026-10-28T02:30:36Z","products":[{"vendor":"dragonmonk111","product":"junoclaw"}],"references":[{"url":"https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-fvq5-79h6-952c","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/Dragonmonk111/junoclaw/commit/2bc54f6","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43991.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43991","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-43991","title":"JunoClaw: plugin-shell shell-injection bypass via substring blocklist","description":"JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.","status":"published","published":"2026-05-12T16:19:54.198Z","modified":"2026-05-13T14:11:22.996Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78","CWE-184"],"updated_at":"2026-11-02T13:37:36.275898Z"}],"euvd":[{"id":"EUVD-2026-29540","description":"JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.","status":"published","published":"2026-05-12T16:19:54Z","modified":"2026-05-13T14:11:22Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:04:34.274348Z"}],"nvd":[{"id":"CVE-2026-43991","description":"JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.","status":"published","published":"2026-05-12T17:16:21.09Z","modified":"2026-10-26T18:10:00.173Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78","CWE-184"],"updated_at":"2026-11-02T14:12:18.613259Z"}],"osv":[{"id":"CVE-2026-43991","title":"JunoClaw: plugin-shell shell-injection bypass via substring blocklist","description":"JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.","status":"published","published":"2026-05-12T16:19:54.198Z","modified":"2026-10-28T02:30:36.760930067Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-184","CWE-78"],"updated_at":"2026-11-02T15:45:04.820169Z"}]}}