{"id":"CVE-2026-31996","aliases":["EUVD-2026-13031","GHSA-4685-c5cp-vp95","GHSA-ggm6-h3mx-cmmp"],"status":"published","title":"OpenClaw \u003c 2026.2.19 - safeBins stdin-only bypass via sort output and recursive grep flags","description":"OpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","severity":{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00148,"percentile":0.04085,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-184","CWE-78"],"published":"2026-02-19T22:06:00Z","modified":"2026-10-28T02:31:04Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.19"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.2.17"},{"fixed":"2026.2.19"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.19"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-4685-c5cp-vp95","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/2c05cbb43e48ebad03626d3125746fb1b9a8520f","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-safebins-stdin-only-bypass-via-sort-output-and-recursive-grep-flags","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31996","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4685-c5cp-vp95"},{"url":"https://github.com/advisories/GHSA-ggm6-h3mx-cmmp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31996.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-31996","title":"OpenClaw \u003c 2026.2.19 - safeBins stdin-only bypass via sort output and recursive grep flags","description":"OpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"published","published":"2026-03-19T01:00:54.213Z","modified":"2026-06-23T16:14:23.967Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:19:51.277563Z"}],"euvd":[{"id":"EUVD-2026-13031","description":"OpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"published","published":"2026-03-19T01:00:54Z","modified":"2026-06-23T16:14:23Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T18:20:32.768333Z"}],"ghsa":[{"id":"GHSA-4685-c5cp-vp95","title":"OpenClaw safeBins stdin-only bypass via sort output and recursive grep flags","description":"## Summary\n`tools.exec.safeBins` could be bypassed for filesystem access when `sort` output flags (`-o` / `--output`) or recursive `grep` flags were allowed through safe-bin execution paths.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `\u003c= 2026.2.17`\n- Patched versions: `\u003e= 2026.2.19`\n- Latest published version at triage time: `2026.2.17`\n\n## Impact\nIn deployments that enabled `tools.exec.safeBins`, an attacker with access to command execution flows could turn intended stdin-only safe-bin usage into file writes (`sort -o`) or recursive file reads (`grep -R`).\n\n## Fix Commit(s)\n- `2c05cbb43e48ebad03626d3125746fb1b9a8520f`\n\nFound using [MCPwner](https://github.com/Pigyon/MCPwner)\n\nThanks @nedlir for reporting.","status":"published","published":"2026-02-19T22:06:00Z","modified":"2026-03-19T21:25:18Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-78","CWE-184"],"updated_at":"2026-11-02T14:39:38.524712Z"},{"id":"GHSA-ggm6-h3mx-cmmp","title":"Duplicate Advisory: safeBins stdin-only bypass via sort output and recursive grep flags","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-4685-c5cp-vp95. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"withdrawn","published":"2026-03-19T03:30:57Z","modified":"2026-03-19T19:16:00Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/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":"low"},{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:39:38.524712Z"}],"nvd":[{"id":"CVE-2026-31996","description":"OpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"published","published":"2026-03-19T02:16:04.917Z","modified":"2026-06-17T10:34:54.223Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/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":"low","assessor":"secondary"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:09.735529Z"}],"osv":[{"id":"CVE-2026-31996","title":"OpenClaw \u003c 2026.2.19 - safeBins stdin-only bypass via sort output and recursive grep flags","description":"OpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"published","published":"2026-03-19T01:00:54.213Z","modified":"2026-10-28T02:31:04.568256172Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:45:01.218144Z"},{"id":"GHSA-4685-c5cp-vp95","title":"OpenClaw safeBins stdin-only bypass via sort output and recursive grep flags","description":"## Summary\n`tools.exec.safeBins` could be bypassed for filesystem access when `sort` output flags (`-o` / `--output`) or recursive `grep` flags were allowed through safe-bin execution paths.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `\u003c= 2026.2.17`\n- Patched versions: `\u003e= 2026.2.19`\n- Latest published version at triage time: `2026.2.17`\n\n## Impact\nIn deployments that enabled `tools.exec.safeBins`, an attacker with access to command execution flows could turn intended stdin-only safe-bin usage into file writes (`sort -o`) or recursive file reads (`grep -R`).\n\n## Fix Commit(s)\n- `2c05cbb43e48ebad03626d3125746fb1b9a8520f`\n\nFound using [MCPwner](https://github.com/Pigyon/MCPwner)\n\nThanks @nedlir for reporting.","status":"published","published":"2026-02-19T22:06:00Z","modified":"2026-03-19T21:41:21.443314Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-184","CWE-78"],"updated_at":"2026-11-02T15:46:36.434231Z"},{"id":"GHSA-ggm6-h3mx-cmmp","title":"Duplicate Advisory: safeBins stdin-only bypass via sort output and recursive grep flags","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-4685-c5cp-vp95. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.19 tools.exec.safeBins contains an input validation bypass vulnerability that allows attackers to execute unintended filesystem operations through sort output flags or recursive grep flags. Attackers with command execution access can leverage sort -o flag for arbitrary file writes or grep -R flag for recursive file reads, circumventing intended stdin-only restrictions.","status":"withdrawn","published":"2026-03-19T03:30:57Z","modified":"2026-03-19T19:32:19.710391Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"},{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/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":"low"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:47.822182Z"}]}}