{"id":"CVE-2026-4039","aliases":["EUVD-2026-11563","GHSA-82g8-464f-2mv7","GHSA-wgx8-r9vw-2w4h"],"status":"published","title":"OpenClaw Skill Env applySkillConfigenvOverrides code injection","description":"A vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00363,"percentile":0.30334,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1341","CWE-15","CWE-74","CWE-94"],"published":"2026-02-27T21:36:17Z","modified":"2026-10-28T02:31:08Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.21"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2026.2.21"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.21"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://vuldb.com/?id.350651","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://vuldb.com/?ctiid.350651","tags":["signature","permissions-required","Permissions Required","VDB Entry","report","web"]},{"url":"https://vuldb.com/?submit.769580","tags":["third-party-advisory","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-82g8-464f-2mv7","tags":["related","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/8c9f35cdb51692b650ddf05b259ccdd75cc9a83c","tags":["patch","Patch","fix","web"]},{"url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.21-beta.1","tags":["patch","Release Notes","fix","web"]},{"url":"https://github.com/openclaw/openclaw/","tags":["product","Product","web"]},{"url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.21","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4039","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-82g8-464f-2mv7"},{"url":"https://github.com/openclaw/openclaw","tags":["package","web"]},{"url":"https://github.com/advisories/GHSA-wgx8-r9vw-2w4h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4039.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-4039","title":"OpenClaw Skill Env applySkillConfigenvOverrides code injection","description":"A vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"published","published":"2026-03-12T12:02:10.143Z","modified":"2026-03-12T13:10:51.077Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"3.0","score":6.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-94","CWE-74"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-11563","description":"A vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"published","published":"2026-03-12T12:02:10Z","modified":"2026-03-12T13:10:51Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"updated_at":"2026-11-02T19:25:36.272941Z"}],"ghsa":[{"id":"GHSA-82g8-464f-2mv7","title":"OpenClaw: Skill env override host env injection via applySkillConfigEnvOverrides (defense-in-depth)","description":"### Summary\n`applySkillConfigEnvOverrides` previously copied `skills.entries.*.env` values into the host `process.env` without applying the host env safety policy.\n\n### Impact\nIn affected versions, dangerous process-level variables such as `NODE_OPTIONS` could be injected when unset, which can influence runtime/child-process behavior.\n\n### Required attacker capability\nAn attacker must be able to modify OpenClaw local state/config (for example `~/.openclaw/openclaw.json`) to set `skills.entries.\u003cskill\u003e.env` or related skill config values.\n\n### Remediation\nFixed in `2026.2.21` by sanitizing skill env overrides and blocking dangerous host env keys (including `NODE_OPTIONS`) before applying overrides, with regression tests covering blocked dangerous keys.\n\n## Fix Commit(s)\n- `8c9f35cdb51692b650ddf05b259ccdd75cc9a83c`\n\nFound using [MCPwner](https://github.com/Pigyon/MCPwner)","status":"published","published":"2026-02-27T21:36:17Z","modified":"2026-03-12T17:30:23Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-15","CWE-94","CWE-1341"],"updated_at":"2026-11-02T14:39:35.644357Z"},{"id":"GHSA-wgx8-r9vw-2w4h","title":" Duplicate Advisory: OpenClaw: Skill env override host env injection via applySkillConfigEnvOverrides (defense-in-depth)","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-82g8-464f-2mv7. This link is maintained to preserve external references.\n\n### Original Description\nA vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"withdrawn","published":"2026-03-12T12:30:29Z","modified":"2026-03-12T17:30:15Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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":"medium"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:39:35.644357Z"}],"nvd":[{"id":"CVE-2026-4039","description":"A vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"published","published":"2026-03-12T12:15:59.74Z","modified":"2026-06-17T10:55:53.147Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","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":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-74","CWE-94"],"updated_at":"2026-11-02T14:12:09.358914Z"}],"osv":[{"id":"CVE-2026-4039","title":"OpenClaw Skill Env applySkillConfigenvOverrides code injection","description":"A vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"published","published":"2026-03-12T12:02:10.143Z","modified":"2026-10-28T02:31:08.442144859Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","level":"medium"}],"cwes":["CWE-74","CWE-94"],"updated_at":"2026-11-02T15:45:03.424067Z"},{"id":"GHSA-82g8-464f-2mv7","title":"OpenClaw: Skill env override host env injection via applySkillConfigEnvOverrides (defense-in-depth)","description":"### Summary\n`applySkillConfigEnvOverrides` previously copied `skills.entries.*.env` values into the host `process.env` without applying the host env safety policy.\n\n### Impact\nIn affected versions, dangerous process-level variables such as `NODE_OPTIONS` could be injected when unset, which can influence runtime/child-process behavior.\n\n### Required attacker capability\nAn attacker must be able to modify OpenClaw local state/config (for example `~/.openclaw/openclaw.json`) to set `skills.entries.\u003cskill\u003e.env` or related skill config values.\n\n### Remediation\nFixed in `2026.2.21` by sanitizing skill env overrides and blocking dangerous host env keys (including `NODE_OPTIONS`) before applying overrides, with regression tests covering blocked dangerous keys.\n\n## Fix Commit(s)\n- `8c9f35cdb51692b650ddf05b259ccdd75cc9a83c`\n\nFound using [MCPwner](https://github.com/Pigyon/MCPwner)","status":"published","published":"2026-02-27T21:36:17Z","modified":"2026-03-14T05:26:20.272874Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-1341","CWE-15","CWE-94"],"updated_at":"2026-11-02T15:46:41.732368Z"},{"id":"GHSA-wgx8-r9vw-2w4h","title":" Duplicate Advisory: OpenClaw: Skill env override host env injection via applySkillConfigEnvOverrides (defense-in-depth)","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-82g8-464f-2mv7. This link is maintained to preserve external references.\n\n### Original Description\nA vulnerability was determined in OpenClaw 2026.2.19-2. This vulnerability affects the function applySkillConfigenvOverrides of the component Skill Env Handler. Executing a manipulation can lead to code injection. It is possible to launch the attack remotely. Upgrading to version 2026.2.21-beta.1 is able to resolve this issue. This patch is called 8c9f35cdb51692b650ddf05b259ccdd75cc9a83c. It is recommended to upgrade the affected component.","status":"withdrawn","published":"2026-03-12T12:30:29Z","modified":"2026-03-14T05:19:21.96582Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:46:58.767335Z"}]}}