CVE-2026-39408

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This vulnerability is fixed in 4.12.12."}, {"lang": "es", "value": "Hono es un framework de aplicaci\u00f3n web que proporciona soporte para cualquier entorno de ejecuci\u00f3n de JavaScript. Antes de la versi\u00f3n 4.12.12, un problema de salto de ruta en toSSG() permite que se escriban archivos fuera del directorio de salida configurado durante la generaci\u00f3n de sitios est\u00e1ticos. Al usar par\u00e1metros de ruta din\u00e1micos a trav\u00e9s de ssgParams, valores especialmente manipulados pueden hacer que las rutas de archivo generadas escapen del directorio de salida previsto. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 4.12.12."}], "id": "CVE-2026-39408", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39408", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-10T20:31:12.971142Z", "version": "2.0.3"}}]}, "published": "2026-04-08T15:16:14.823", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/honojs/hono/releases/tag/v4.12.12"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.12.12)"}}], "enrichment": {"confidence": 90.0, "confidence_source": "matching", "scores": [{"score": 90.0, "source": "matching"}]}, "original": {"product": "hono", "source": "cna", "vendor": "honojs"}, "product": "hono", "vendor": "hono"}], "analysis": {"en": {"generated_at": "2026-04-08T17:21:00.193540+00:00", "value": {"mitigation_remediation": ["Upgrade Hono to version 4.12.12 or newer to eliminate the path traversal flaw."], "summary": {"action": "Apply Patch", "impact": "Arbitrary File Write"}, "threat_synthesis": {"affected_systems": "Any installation of Hono older than version 4.12.12 is affected, regardless of the JavaScript runtime used. The defect is present in all builds that invoke the toSSG function with user-controllable ssgParams until the patch is applied.", "description_and_impact": "The flaw resides in the toSSG function of the Hono web framework, where a path traversal bug permits specially crafted dynamic route parameters to escape the intended output directory during static site generation. This allows an attacker to write files anywhere on the build machine, potentially overwriting configuration files or injecting malicious content into the generated site.", "risk_and_exploitability": "The vulnerability carries a moderate severity score of 5.9. Exploitation requires the attacker to influence the static site generation parameters, which is typically possible only during site build or deployment. No public exploits are recorded and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog. Successful exploitation would allow a compromise of the build environment\u2019s file system but does not provide remote code execution beyond file write capabilities."}}}}, "created": "2026-04-08T19:39:13.392187+00:00", "updated": "2026-04-09T08:18:48.158286+00:00", "vendors": ["hono", "hono$PRODUCT$hono"]}