{"id":"CVE-2026-42435","aliases":["EUVD-2026-27253","GHSA-j6c7-3h5x-99g9"],"status":"published","title":"OpenClaw 2026.2.22 \u003c 2026.4.12 - Shell-Wrapper Detection Bypass via Environment Variable Assignment Injection","description":"OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling to manipulate high-risk shell variables like SHELLOPTS and PS4, affecting execution semantics and security controls.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00408,"percentile":0.3537,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-184","CWE-78"],"published":"2026-04-17T21:53:36Z","modified":"2026-11-11T02:50:49Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.4.12"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2026.2.22"},{"fixed":"2026.4.12"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"2026.2.22"},{"fixed":"2026.4.12"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-j6c7-3h5x-99g9","tags":["vendor-advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/8f8492d172f4c5b4fd7dd9a47855ed620c8770ab","tags":["patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-shell-wrapper-detection-bypass-via-environment-variable-assignment-injection","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/openclaw/openclaw/pull/65717","tags":["web"]},{"url":"https://github.com/advisories/GHSA-j6c7-3h5x-99g9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42435.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42435","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-42435","title":"OpenClaw 2026.2.22 \u003c 2026.4.12 - Shell-Wrapper Detection Bypass via Environment Variable Assignment Injection","description":"OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling to manipulate high-risk shell variables like SHELLOPTS and PS4, affecting execution semantics and security controls.","status":"published","published":"2026-05-05T11:24:54.597Z","modified":"2026-05-06T12:30:24.09Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-184"],"updated_at":"2026-11-02T13:40:35.004553Z"}],"euvd":[{"id":"EUVD-2026-27253","description":"OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling to manipulate high-risk shell variables like SHELLOPTS and PS4, affecting execution semantics and security controls.","status":"published","published":"2026-05-05T11:24:54Z","modified":"2026-05-06T12:30:24Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:05:16.683147Z"}],"ghsa":[{"id":"GHSA-j6c7-3h5x-99g9","title":"OpenClaw: Shell-wrapper detection missed env-argv assignment injection forms","description":"## Summary\n\nShell-wrapper detection missed env-argv assignment injection forms.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `\u003e= 2026.2.22 \u003c 2026.4.12`\n- Patched versions: `\u003e= 2026.4.12`\n\n## Impact\n\nExec preflight handling missed shell-wrapper and argv-level environment assignment forms that could affect execution semantics, including high-risk shell environment controls.\n\n## Technical Details\n\nThe fix broadens shell-wrapper detection and blocks environment assignments in argv forms. High-risk shell variables such as `SHELLOPTS` and `PS4` are covered by the host environment security policy.\n\n## Fix\n\nThe issue was fixed in #65717. The first stable tag containing the fix is `v2026.4.12`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `8f8492d172f4c5b4fd7dd9a47855ed620c8770ab`\n- PR: #65717\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.12 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Credits\n\nThanks to @decsecre583 for reporting this issue.","status":"published","published":"2026-04-17T21:53:36Z","modified":"2026-05-05T11:48:47Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:40:00.970271Z"}],"nvd":[{"id":"CVE-2026-42435","description":"OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling to manipulate high-risk shell variables like SHELLOPTS and PS4, affecting execution semantics and security controls.","status":"published","published":"2026-05-05T12:16:17.91Z","modified":"2026-06-17T10:47:50.25Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-184"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"CVE-2026-42435","title":"OpenClaw 2026.2.22 \u003c 2026.4.12 - Shell-Wrapper Detection Bypass via Environment Variable Assignment Injection","description":"OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling to manipulate high-risk shell variables like SHELLOPTS and PS4, affecting execution semantics and security controls.","status":"published","published":"2026-05-05T11:24:54.597Z","modified":"2026-11-11T10:47:51.102503862Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-184"],"updated_at":"2026-11-11T03:21:13.402158Z"},{"id":"GHSA-j6c7-3h5x-99g9","title":"OpenClaw: Shell-wrapper detection missed env-argv assignment injection forms","description":"## Summary\n\nShell-wrapper detection missed env-argv assignment injection forms.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `\u003e= 2026.2.22 \u003c 2026.4.12`\n- Patched versions: `\u003e= 2026.4.12`\n\n## Impact\n\nExec preflight handling missed shell-wrapper and argv-level environment assignment forms that could affect execution semantics, including high-risk shell environment controls.\n\n## Technical Details\n\nThe fix broadens shell-wrapper detection and blocks environment assignments in argv forms. High-risk shell variables such as `SHELLOPTS` and `PS4` are covered by the host environment security policy.\n\n## Fix\n\nThe issue was fixed in #65717. The first stable tag containing the fix is `v2026.4.12`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `8f8492d172f4c5b4fd7dd9a47855ed620c8770ab`\n- PR: #65717\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.12 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Credits\n\nThanks to @decsecre583 for reporting this issue.","status":"published","published":"2026-04-17T21:53:36Z","modified":"2026-05-05T16:11:45.905546Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:49.977351Z"}]}}