{"api_version":"1","generated_at":"2026-11-12T23:54:14+00:00","cve":"CVE-2026-65968","urls":{"html":"https://cve.report/CVE-2026-65968","api":"https://cve.report/api/cve/CVE-2026-65968.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-65968","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-65968"},"summary":{"title":"ideon: Unauthenticated SSRF in /api/proxy/image via WHATWG bracketed/hex-mapped IPv6 bypass of isSafeUrl guard","description":"ideon is a self-hosted visual workspace. Prior to version 0.9.4, validateUrlForSSRF() / safeFetch() in lib/oauth/ssrf-protection.ts (and the parallel validateMcpUrl() in lib/security/validators.ts) perform SSRF host-blocking by string/regex matching on new URL(url).hostname. Their IPv6 branch only recognises the textual forms ::1, fe80:/fc00:/fd00: prefixes, and the dotted-decimal IPv4-mapped form ::ffff:127.x. It does not recognise the WHATWG-canonical IPv4-mapped-IPv6 host that Node emits for a mapped address, which is hex-compressed and bracket-wrapped: [::ffff:7f00:1] for 127.0.0.1, [::ffff:a9fe:a9fe] for 169.254.169.254. An authenticated user who registers a STREAMABLE_HTTP / SSE MCP server with URL http://[::ffff:7f00:1]:PORT/ (loopback) or http://[::ffff:a9fe:a9fe]/ (cloud metadata) passes both guards, and the server-side OAuth-discovery action then fetches that host, yielding server-side request forgery to loopback and to the cloud metadata service. This issue has been patched in version 0.9.4.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-11-11 21:16:46","updated_at":"2026-11-12 22:18:51"},"problem_types":["CWE-918","CWE-918 CWE-918: Server-Side Request Forgery"],"metrics":[{"version":"4.0","source":"security-advisories@github.com","type":"Secondary","score":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","data":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"}}],"references":[{"url":"https://github.com/3xpyth0n/ideon/commit/58e2f26bb7259d24c963a753962ac34f56c63b01","name":"https://github.com/3xpyth0n/ideon/commit/58e2f26bb7259d24c963a753962ac34f56c63b01","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/3xpyth0n/ideon/releases/tag/v0.9.4","name":"https://github.com/3xpyth0n/ideon/releases/tag/v0.9.4","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/3xpyth0n/ideon/security/advisories/GHSA-cvcr-fcf6-366r","name":"https://github.com/3xpyth0n/ideon/security/advisories/GHSA-cvcr-fcf6-366r","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-65968","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65968","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"3xpyth0n","product":"ideon","version":"affected < 0.9.4","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"ideon","vendor":"3xpyth0n","versions":[{"status":"affected","version":"< 0.9.4"}]}],"descriptions":[{"lang":"en","value":"ideon is a self-hosted visual workspace. Prior to version 0.9.4, validateUrlForSSRF() / safeFetch() in lib/oauth/ssrf-protection.ts (and the parallel validateMcpUrl() in lib/security/validators.ts) perform SSRF host-blocking by string/regex matching on new URL(url).hostname. Their IPv6 branch only recognises the textual forms ::1, fe80:/fc00:/fd00: prefixes, and the dotted-decimal IPv4-mapped form ::ffff:127.x. It does not recognise the WHATWG-canonical IPv4-mapped-IPv6 host that Node emits for a mapped address, which is hex-compressed and bracket-wrapped: [::ffff:7f00:1] for 127.0.0.1, [::ffff:a9fe:a9fe] for 169.254.169.254. An authenticated user who registers a STREAMABLE_HTTP / SSE MCP server with URL http://[::ffff:7f00:1]:PORT/ (loopback) or http://[::ffff:a9fe:a9fe]/ (cloud metadata) passes both guards, and the server-side OAuth-discovery action then fetches that host, yielding server-side request forgery to loopback and to the cloud metadata service. This issue has been patched in version 0.9.4."}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-11T20:57:39.798Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/3xpyth0n/ideon/security/advisories/GHSA-cvcr-fcf6-366r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/3xpyth0n/ideon/security/advisories/GHSA-cvcr-fcf6-366r"},{"name":"https://github.com/3xpyth0n/ideon/commit/58e2f26bb7259d24c963a753962ac34f56c63b01","tags":["x_refsource_MISC"],"url":"https://github.com/3xpyth0n/ideon/commit/58e2f26bb7259d24c963a753962ac34f56c63b01"},{"name":"https://github.com/3xpyth0n/ideon/releases/tag/v0.9.4","tags":["x_refsource_MISC"],"url":"https://github.com/3xpyth0n/ideon/releases/tag/v0.9.4"}],"source":{"advisory":"GHSA-cvcr-fcf6-366r","discovery":"UNKNOWN"},"title":"ideon: Unauthenticated SSRF in /api/proxy/image via WHATWG bracketed/hex-mapped IPv6 bypass of isSafeUrl guard"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-65968","datePublished":"2026-11-11T20:57:39.798Z","dateReserved":"2026-07-23T18:15:14.580Z","dateUpdated":"2026-11-11T20:57:39.798Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-11 21:16:46","lastModifiedDate":"2026-11-12 22:18:51","problem_types":["CWE-918","CWE-918 CWE-918: Server-Side Request Forgery"],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"65968","Ordinal":"1","Title":"ideon: Unauthenticated SSRF in /api/proxy/image via WHATWG brack","CVE":"CVE-2026-65968","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"65968","Ordinal":"1","NoteData":"ideon is a self-hosted visual workspace. Prior to version 0.9.4, validateUrlForSSRF() / safeFetch() in lib/oauth/ssrf-protection.ts (and the parallel validateMcpUrl() in lib/security/validators.ts) perform SSRF host-blocking by string/regex matching on new URL(url).hostname. Their IPv6 branch only recognises the textual forms ::1, fe80:/fc00:/fd00: prefixes, and the dotted-decimal IPv4-mapped form ::ffff:127.x. It does not recognise the WHATWG-canonical IPv4-mapped-IPv6 host that Node emits for a mapped address, which is hex-compressed and bracket-wrapped: [::ffff:7f00:1] for 127.0.0.1, [::ffff:a9fe:a9fe] for 169.254.169.254. An authenticated user who registers a STREAMABLE_HTTP / SSE MCP server with URL http://[::ffff:7f00:1]:PORT/ (loopback) or http://[::ffff:a9fe:a9fe]/ (cloud metadata) passes both guards, and the server-side OAuth-discovery action then fetches that host, yielding server-side request forgery to loopback and to the cloud metadata service. This issue has been patched in version 0.9.4.","Type":"Description","Title":"ideon: Unauthenticated SSRF in /api/proxy/image via WHATWG brack"}]}}}