{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63405", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-16T19:20:28.987Z", "datePublished": "2026-09-18T16:47:37.120Z", "dateUpdated": "2026-09-18T17:07:38.720Z"}, "containers": {"cna": {"title": "AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body", "problemTypes": [{"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"}, {"name": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c", "tags": ["x_refsource_MISC"], "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"}, {"name": "https://github.com/anycable/anycable/releases/tag/v1.6.15", "tags": ["x_refsource_MISC"], "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"}], "affected": [{"vendor": "anycable", "product": "anycable", "versions": [{"version": "< 1.6.15", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-18T16:47:37.120Z"}, "descriptions": [{"lang": "en", "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request's application context. This issue is fixed in version 1.6.15."}], "source": {"advisory": "GHSA-5p54-whvp-x327", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-18T17:07:09.768503Z", "id": "CVE-2026-63405", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-18T17:07:38.720Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "anycable", "vendor": "anycable", "versions": [{"status": "affected", "version": "< 1.6.15"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request's application context. This issue is fixed in version 1.6.15."}], "id": "CVE-2026-63405", "lastModified": "2026-09-18T18:17:10.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63405", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-18T17:07:09.768503Z", "version": "2.0.3"}}]}, "published": "2026-09-18T17:16:59.463", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"}, {"source": "security-advisories@github.com", "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"}, {"source": "security-advisories@github.com", "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2026-09-19T12:15:17.529038+00:00", "updated": "2026-09-19T12:15:17.529044+00:00", "vendors": []}