CVE-2026-39412

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{"affected": [{"affectedData": [{"product": "liquidjs", "vendor": "harttle", "versions": [{"status": "affected", "version": "< 10.25.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:liquidjs:liquidjs:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "9A1F877E-F61D-4CC4-AF26-4BD0923D877E", "versionEndExcluding": "10.25.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.4, the sort_natural filter bypasses the ownPropertyOnly security option, allowing template authors to extract values of prototype-inherited properties through a sorting side-channel attack. Applications relying on ownPropertyOnly: true as a security boundary (e.g., multi-tenant template systems) are exposed to information disclosure of sensitive prototype properties such as API keys and tokens. This vulnerability is fixed in 10.25.4."}, {"lang": "es", "value": "LiquidJS es un motor de plantillas compatible con Shopify / GitHub Pages en JavaScript puro. Antes de la 10.25.4, el filtro sort_natural omite la opci\u00f3n de seguridad ownPropertyOnly, permitiendo a los autores de plantillas extraer valores de propiedades heredadas del prototipo a trav\u00e9s de un ataque de canal lateral de ordenaci\u00f3n. Las aplicaciones que dependen de ownPropertyOnly: true como l\u00edmite de seguridad (por ejemplo, sistemas de plantillas multi-inquilino) est\u00e1n expuestas a la revelaci\u00f3n de informaci\u00f3n de propiedades sensibles del prototipo, como claves API y tokens. Esta vulnerabilidad est\u00e1 corregida en la 10.25.4."}], "id": "CVE-2026-39412", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39412", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-09T13:53:22.871378Z", "version": "2.0.3"}}]}, "published": "2026-04-08T20:16:25.733", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/harttle/liquidjs/commit/e743da0020d34e2ee547e1cc1a86b58377ebe1ce"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Product"], "url": "https://github.com/harttle/liquidjs/pull/869"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/harttle/liquidjs/releases/tag/v10.25.4"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,10.25.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "liquidjs", "source": "cna", "vendor": "harttle"}, "product": "liquidjs", "vendor": "harttle"}], "analysis": {"en": {"generated_at": "2026-04-20T18:45:43.863757+00:00", "value": {"mitigation_remediation": ["Upgrade liquidjs to version 10.25.4 or later to apply the vendor patch.", "Remove or avoid the use of the sort_natural filter in templates that handle untrusted data.", "Configure the engine to enforce ownPropertyOnly: true for all templates so prototype properties are blocked.", "Restrict template rendering to trusted users or contexts to reduce exposure."], "summary": {"action": "Patch Now", "impact": "Information Disclosure"}, "threat_synthesis": {"affected_systems": "All deployments that use liquidjs version 10.25.3 or earlier are impacted. The affected product is the liquidjs library (vendor Harttle). Applications that enforce ownPropertyOnly: true to isolate tenant templates, such as Shopify or custom GitHub Pages configurations, are at risk of inadvertently exposing prototype information.", "description_and_impact": "LiquidJS, a plain\u2011JavaScript template engine used by Shopify and GitHub Pages, contains a flaw in its sort_natural filter that bypasses the ownPropertyOnly security option. By exploiting a sorting side\u2011channel, a malicious template can read prototype\u2011inherited properties such as API keys and tokens. This leakage is a privacy breach, classified as CWE\u2011200, and threatens the confidentiality of data in multi\u2011tenant systems that rely on ownPropertyOnly as a guardrail.", "risk_and_exploitability": "The vulnerability scores a CVSS of 5.3, indicating moderate severity. The EPSS score of < 1% indicates a very low probability of exploitation. This vulnerability is not listed in CISA's KEV catalog. Based on the description, it is inferred that the attack vector requires a malicious template rendering that invokes sort_natural to probe prototype properties. If an attacker can supply arbitrary templates, the vulnerability could be exploited in any environment that processes untrusted templates, potentially exposing sensitive configuration data."}}}}, "created": "2026-04-09T08:18:14.194523+00:00", "updated": "2026-04-20T19:00:10.645359+00:00", "vendors": ["harttle", "harttle$PRODUCT$liquidjs"]}