{"id":"CVE-2026-28459","aliases":["EUVD-2026-9907","GHSA-64qx-vpxx-mvqf"],"status":"published","title":"OpenClaw \u003c 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path","description":"OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00421,"percentile":0.36956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-23","CWE-284","CWE-73","CWE-78"],"published":"2026-02-17T16:43:51Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.12"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2026.2.12"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.12"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-64qx-vpxx-mvqf","tags":["vendor-advisory","Patch","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/4199f9889f0c307b77096a229b9e085b8d856c26","tags":["patch","Patch","fix","web"]},{"url":"https://github.com/openclaw/openclaw/commit/25950bcbb8ba4d8cde002557f6e27c219ae4deda","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-arbitrary-file-write-via-untrusted-sessionfile-path","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.12","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28459","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-64qx-vpxx-mvqf"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28459.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-28459","title":"OpenClaw \u003c 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path","description":"OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.","status":"published","published":"2026-03-05T21:59:37.255Z","modified":"2026-03-09T17:20:30.03Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:20:01.969981Z"}],"euvd":[{"id":"EUVD-2026-9907","description":"OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.","status":"published","published":"2026-03-05T21:59:37Z","modified":"2026-03-09T17:20:30Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:07.128863Z"}],"ghsa":[{"id":"GHSA-64qx-vpxx-mvqf","title":"OpenClaw has an arbitrary transcript path file write via gateway sessionFile","description":"## Summary\n\nIn OpenClaw versions prior to 2026.2.12, the gateway accepted an untrusted `sessionFile` path when resolving the session transcript file. This could allow an authenticated gateway client to create and append OpenClaw session transcript records at an arbitrary path on the gateway host.\n\n## Affected Versions\n\n- Affected: openclaw `\u003c 2026.2.12`\n- Patched: openclaw `\u003e= 2026.2.12` (recommended: `\u003e= 2026.2.13`)\n\n## Impact\n\nAn authenticated gateway client could influence where the gateway writes transcript data by supplying `sessionFile` outside of the sessions directory. Depending on deployment and filesystem permissions, this may enable arbitrary file creation and repeated appends, leading to configuration corruption and/or denial of service.\n\nThis issue does not, by itself, provide a proven remote code execution path.\n\n## Fix\n\nThe transcript path is now constrained to the sessions directory via `resolveSessionFilePath(...)` containment checks.\n\nFix commits:\n- 4199f9889f0c307b77096a229b9e085b8d856c26\n- (compat) 25950bcbb8ba4d8cde002557f6e27c219ae4deda\n\n## Credits\n\nThanks to @tubadeligoz for the report.","status":"published","published":"2026-02-17T16:43:51Z","modified":"2026-03-06T01:00:19Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"cwes":["CWE-23","CWE-73","CWE-78","CWE-284"],"updated_at":"2026-11-02T14:39:32.329372Z"}],"nvd":[{"id":"CVE-2026-28459","description":"OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.","status":"published","published":"2026-03-05T22:16:18.67Z","modified":"2026-06-17T10:28:40.813Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:12:07.852448Z"}],"osv":[{"id":"CVE-2026-28459","title":"OpenClaw \u003c 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path","description":"OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.","status":"published","published":"2026-03-05T21:59:37.255Z","modified":"2026-10-28T02:30:42.152843396Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T15:45:00.530889Z"},{"id":"GHSA-64qx-vpxx-mvqf","title":"OpenClaw has an arbitrary transcript path file write via gateway sessionFile","description":"## Summary\n\nIn OpenClaw versions prior to 2026.2.12, the gateway accepted an untrusted `sessionFile` path when resolving the session transcript file. This could allow an authenticated gateway client to create and append OpenClaw session transcript records at an arbitrary path on the gateway host.\n\n## Affected Versions\n\n- Affected: openclaw `\u003c 2026.2.12`\n- Patched: openclaw `\u003e= 2026.2.12` (recommended: `\u003e= 2026.2.13`)\n\n## Impact\n\nAn authenticated gateway client could influence where the gateway writes transcript data by supplying `sessionFile` outside of the sessions directory. Depending on deployment and filesystem permissions, this may enable arbitrary file creation and repeated appends, leading to configuration corruption and/or denial of service.\n\nThis issue does not, by itself, provide a proven remote code execution path.\n\n## Fix\n\nThe transcript path is now constrained to the sessions directory via `resolveSessionFilePath(...)` containment checks.\n\nFix commits:\n- 4199f9889f0c307b77096a229b9e085b8d856c26\n- (compat) 25950bcbb8ba4d8cde002557f6e27c219ae4deda\n\n## Credits\n\nThanks to @tubadeligoz for the report.","status":"published","published":"2026-02-17T16:43:51Z","modified":"2026-03-06T01:17:40.361547Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high"},{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-23","CWE-284","CWE-73","CWE-78"],"updated_at":"2026-11-02T15:46:39.266402Z"}]}}