{"id":"CVE-2026-28464","aliases":["EUVD-2026-9910","GHSA-jmm5-fvh5-gf4p"],"status":"published","title":"OpenClaw \u003c 2026.2.12 - Timing Attack in Hooks Token Authentication","description":"OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00449,"percentile":0.39455,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-208"],"published":"2026-03-02T22:43:34Z","modified":"2026-10-28T02:31:02Z","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-jmm5-fvh5-gf4p","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/113ebfd6a23c4beb8a575d48f7482593254506ec","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-timing-attack-in-hooks-token-authentication","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28464","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jmm5-fvh5-gf4p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28464.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-28464","title":"OpenClaw \u003c 2026.2.12 - Timing Attack in Hooks Token Authentication","description":"OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.","status":"published","published":"2026-03-05T21:59:40.965Z","modified":"2026-03-09T17:50:10.095Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-9910","description":"OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.","status":"published","published":"2026-03-05T21:59:40Z","modified":"2026-03-09T17:50:10Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:07.128863Z"}],"ghsa":[{"id":"GHSA-jmm5-fvh5-gf4p","title":"OpenClaw has non-constant-time token comparison in hooks authentication","description":"## Summary\n\nOpenClaw hooks previously compared the provided hook token using a regular string comparison. Because this comparison is not constant-time, an attacker with network access to the hooks endpoint could potentially use timing measurements across many requests to gradually infer the token.\n\nIn practice, this typically requires hooks to be exposed to an untrusted network and a large number of requests; real-world latency and jitter can make reliable measurement difficult.\n\n## Affected Packages / Versions\n\n- openclaw (npm): \u003c 2026.2.12\n\n## Patched Versions\n\n- openclaw (npm): \u003e= 2026.2.12\n\n## Mitigations\n\n- Upgrade to openclaw \u003e= 2026.2.12.\n- If users cannot upgrade immediately: restrict network access to the hooks endpoint and rotate the hooks token after updating.\n\n## Fix Commit(s)\n\n- 113ebfd6a23c4beb8a575d48f7482593254506ec\n\nOpenClaw thanks @akhmittra for reporting.","status":"published","published":"2026-03-02T22:43:34Z","modified":"2026-03-06T01:05:25Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T14:39:32.329372Z"}],"nvd":[{"id":"CVE-2026-28464","description":"OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.","status":"published","published":"2026-03-05T22:16:19.393Z","modified":"2026-06-17T10:28:41.47Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/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":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T14:12:07.852448Z"}],"osv":[{"id":"CVE-2026-28464","title":"OpenClaw \u003c 2026.2.12 - Timing Attack in Hooks Token Authentication","description":"OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.","status":"published","published":"2026-03-05T21:59:40.965Z","modified":"2026-10-28T02:31:02.332260283Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T15:45:00.530889Z"},{"id":"GHSA-jmm5-fvh5-gf4p","title":"OpenClaw has non-constant-time token comparison in hooks authentication","description":"## Summary\n\nOpenClaw hooks previously compared the provided hook token using a regular string comparison. Because this comparison is not constant-time, an attacker with network access to the hooks endpoint could potentially use timing measurements across many requests to gradually infer the token.\n\nIn practice, this typically requires hooks to be exposed to an untrusted network and a large number of requests; real-world latency and jitter can make reliable measurement difficult.\n\n## Affected Packages / Versions\n\n- openclaw (npm): \u003c 2026.2.12\n\n## Patched Versions\n\n- openclaw (npm): \u003e= 2026.2.12\n\n## Mitigations\n\n- Upgrade to openclaw \u003e= 2026.2.12.\n- If users cannot upgrade immediately: restrict network access to the hooks endpoint and rotate the hooks token after updating.\n\n## Fix Commit(s)\n\n- 113ebfd6a23c4beb8a575d48f7482593254506ec\n\nOpenClaw thanks @akhmittra for reporting.","status":"published","published":"2026-03-02T22:43:34Z","modified":"2026-03-06T01:16:33.635775Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"},{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T15:46:50.687609Z"}]}}