{"id":"CVE-2026-28459","aliases":["GHSA-64qx-vpxx-mvqf"],"url":"https://o3.security/vulnerability/CVE-2026-28459","summary":"OpenClaw < 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path","details":"## 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 `< 2026.2.12`\n- Patched: openclaw `>= 2026.2.12` (recommended: `>= 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.","published":"2026-03-05T21:59:37.255Z","modified":"2026-10-28T02:30:42.152843396Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.2.12"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/25950bcbb8ba4d8cde002557f6e27c219ae4deda","label":"openclaw/openclaw@25950bc"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28459.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-64qx-vpxx-mvqf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28459"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-arbitrary-file-write-via-untrusted-sessionfile-path"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/25950bcbb8ba4d8cde002557f6e27c219ae4deda"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/4199f9889f0c307b77096a229b9e085b8d856c26"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.12"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:42.152843396Z"}}