{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39412", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-07T00:23:30.595Z", "datePublished": "2026-04-08T19:39:17.780Z", "dateUpdated": "2026-04-09T13:53:27.859Z"}, "containers": {"cna": {"title": "LiquidJS has an ownPropertyOnly bypass via sort_natural filter \u2014 prototype property information disclosure through sorting side-channel", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv"}, {"name": "https://github.com/harttle/liquidjs/pull/869", "tags": ["x_refsource_MISC"], "url": "https://github.com/harttle/liquidjs/pull/869"}, {"name": "https://github.com/harttle/liquidjs/commit/e743da0020d34e2ee547e1cc1a86b58377ebe1ce", "tags": ["x_refsource_MISC"], "url": "https://github.com/harttle/liquidjs/commit/e743da0020d34e2ee547e1cc1a86b58377ebe1ce"}, {"name": "https://github.com/harttle/liquidjs/releases/tag/v10.25.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/harttle/liquidjs/releases/tag/v10.25.4"}], "affected": [{"vendor": "harttle", "product": "liquidjs", "versions": [{"version": "< 10.25.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-08T19:39:17.780Z"}, "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."}], "source": {"advisory": "GHSA-rv5g-f82m-qrvv", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-rv5g-f82m-qrvv", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-09T13:53:22.871378Z", "id": "CVE-2026-39412", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"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": "2026-04-09T13:53:27.859Z"}}]}}

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{}

{"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": "2026-04-08T20:50:37.708614+00:00", "value": {"mitigation_remediation": ["Upgrade liquidjs to version 10.25.4 or later to apply the vendor patch.", "Verify that ownPropertyOnly is set to true and the sort_natural filter no longer exposes prototype properties.", "If an upgrade is not immediately possible, avoid using sort_natural on untrusted template data or remove the filter from templates until a patch is available.", "Review all templating sources and restrict template execution to trusted users to limit 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 unwittingly exposing prototype information.", "description_and_impact": "LiquidJS, a JavaScript 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, an attacker 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 used by multi\u2011tenant applications that rely on the ownPropertyOnly boundary.", "risk_and_exploitability": "The vulnerability scores a CVSS of 5.3, indicating moderate severity. Because no EPSS score is available, the likelihood of exploitation is unclear. 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": "2026-04-09T08:27:36.600956+00:00", "vendors": ["harttle", "harttle$PRODUCT$liquidjs"]}