{"id":"CVE-2026-100555","state":"PUBLISHED","title":"OpenClaw before 2026.8.1 DNS Rebinding via attachment delivery","description":"OpenClaw is an npm-distributed gateway application. In versions >= 2026.7.1 and < 2026.8.1, Synology Chat attachment delivery could lose DNS pinning: the Gateway validated a single DNS result for a supplied file URL but then passed the original hostname to the Synology NAS, where it could resolve to a different destination. When attachment delivery accepted a remotely influenced hostname, an attacker could use DNS rebinding to make the NAS fetch a private or otherwise policy-denied resource and return its contents to the addressed conversation (server-side request forgery). Practical impact depends on NAS routing, resolver behavior, and the response available at the private destination. The issue is fixed in 2026.8.1; as a workaround, disable remote URL attachment forwarding in Synology Chat.","publishedAt":"2026-09-26T02:18:49.708Z","updatedAt":"2026-10-05T14:55:03.826Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["OpenClaw OpenClaw"],"affected":[{"vendor":"OpenClaw","product":"OpenClaw","packageURL":"pkg:npm/openclaw","defaultStatus":"unaffected","versions":[{"version":"2026.7.1","status":"affected","lessThan":"2026.8.1","versionType":"semver"},{"version":"2026.8.1","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/openclaw/openclaw/security/advisories/GHSA-cf95-m4jv-59rc","https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-dns-rebinding-via-attachment-delivery"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100555.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100555","state":"PUBLISHED","datePublished":"2026-09-26T02:18:49.708Z","dateUpdated":"2026-10-05T14:55:03.826Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-26T01:02:38.347Z"},"containers":{"cna":{"title":"OpenClaw before 2026.8.1 DNS Rebinding via attachment delivery","descriptions":[{"lang":"en","value":"OpenClaw is an npm-distributed gateway application. In versions >= 2026.7.1 and < 2026.8.1, Synology Chat attachment delivery could lose DNS pinning: the Gateway validated a single DNS result for a supplied file URL but then passed the original hostname to the Synology NAS, where it could resolve to a different destination. When attachment delivery accepted a remotely influenced hostname, an attacker could use DNS rebinding to make the NAS fetch a private or otherwise policy-denied resource and return its contents to the addressed conversation (server-side request forgery). Practical impact depends on NAS routing, resolver behavior, and the response available at the private destination. The issue is fixed in 2026.8.1; as a workaround, disable remote URL attachment forwarding in Synology Chat."}],"affected":[{"vendor":"OpenClaw","product":"OpenClaw","packageURL":"pkg:npm/openclaw","defaultStatus":"unaffected","versions":[{"version":"2026.7.1","status":"affected","lessThan":"2026.8.1","versionType":"semver"},{"version":"2026.8.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-cf95-m4jv-59rc","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-cf95-m4jv-59rc)"},{"url":"https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-dns-rebinding-via-attachment-delivery","name":"VulnCheck Advisory: OpenClaw before 2026.8.1 DNS Rebinding via attachment delivery","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-26T02:18:49.708Z"},"datePublic":"2026-09-11T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*","versionStartIncluding":"2026.7.1","versionEndExcluding":"2026.8.1"}]}]}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-100555","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-05T14:04:24.718338Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-05T14:55:03.826Z"}}]}}}