CVE-2026-115938

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Craft\u2019s allowed\u00a0column\u00a0filter delegates property lookup to Yii\u00a0ArrayHelper, outside Twig\u2019s\u00a0SecurityPolicy. Repeated single-segment lookups therefore bypass the sandbox\u2019s empty property/method allowlists.\n\n\n\nThe vulnerable condition value is ultimately cast to an integer. That does not protect the secret: the template can return author ID\u00a01\u00a0when a guessed key character is correct and an impossible ID otherwise. The JSON endpoint returns entries for the first case and an empty array for the second, forming a stable remote character oracle.\n\n\n\nAfter recovering\u00a0GeneralConfig::securityKey, the same user can compute Craft\u2019s generic HMAC wire format offline. Signed parameters such as\u00a0redirect\u00a0are then accepted and passed to unsandboxed\u00a0View::renderObjectTemplate(), where Twig\u2019s string-callable form can invoke native PHP callables. The regression proof uses the harmless\u00a0substr()\u00a0callback and observes\u00a0abcdef\u00a0becoming\u00a0cdef; it does not execute an OS command.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Craft CMS allows any authenticated control panel user to submit an element-search condition whose element selector is evaluated as a sandboxed Twig object template. Craft\u2019s allowed&nbsp;<code>column</code>&nbsp;filter delegates property lookup to Yii&nbsp;<code>ArrayHelper</code>, outside Twig\u2019s&nbsp;<code>SecurityPolicy</code>. Repeated single-segment lookups therefore bypass the sandbox\u2019s empty property/method allowlists.</p><p>The vulnerable condition value is ultimately cast to an integer. That does not protect the secret: the template can return author ID&nbsp;<code>1</code>&nbsp;when a guessed key character is correct and an impossible ID otherwise. The JSON endpoint returns entries for the first case and an empty array for the second, forming a stable remote character oracle.</p><p>After recovering&nbsp;<code>GeneralConfig::securityKey</code>, the same user can compute Craft\u2019s generic HMAC wire format offline. Signed parameters such as&nbsp;<code>redirect</code>&nbsp;are then accepted and passed to unsandboxed&nbsp;<code>View::renderObjectTemplate()</code>, where Twig\u2019s string-callable form can invoke native PHP callables. The regression proof uses the harmless&nbsp;<code>substr()</code>&nbsp;callback and observes&nbsp;<code>abcdef</code>&nbsp;becoming&nbsp;<code>cdef</code>; it does not execute an OS command.</p>"}]}], "references": [{"url": "https://www.hckrt.com/hacktivity/HCKRT-DRNL9W", "tags": ["third-party-advisory", "technical-description", "mitigation"]}, {"url": "https://github.com/craftcms/cms/releases/tag/5.11.2", "tags": ["release-notes"]}, {"url": "https://github.com/craftcms/cms", "tags": ["product"]}, {"url": "https://github.com/craftcms/cms/security/advisories/GHSA-v4q3-2g5g-wjj6", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "Mohamed Wagdy (@Kalawy)", "type": "reporter"}, {"lang": "en", "value": "Hackrate", "type": "coordinator"}], "source": {"advisory": "GHSA-v4q3-2g5g-wjj6", "discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-02T15:02:44.482817Z", "id": "CVE-2026-115938", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-02T15:03:03.061Z"}}]}}

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Craft\u2019s allowed\u00a0column\u00a0filter delegates property lookup to Yii\u00a0ArrayHelper, outside Twig\u2019s\u00a0SecurityPolicy. Repeated single-segment lookups therefore bypass the sandbox\u2019s empty property/method allowlists.\n\n\n\nThe vulnerable condition value is ultimately cast to an integer. That does not protect the secret: the template can return author ID\u00a01\u00a0when a guessed key character is correct and an impossible ID otherwise. The JSON endpoint returns entries for the first case and an empty array for the second, forming a stable remote character oracle.\n\n\n\nAfter recovering\u00a0GeneralConfig::securityKey, the same user can compute Craft\u2019s generic HMAC wire format offline. Signed parameters such as\u00a0redirect\u00a0are then accepted and passed to unsandboxed\u00a0View::renderObjectTemplate(), where Twig\u2019s string-callable form can invoke native PHP callables. The regression proof uses the harmless\u00a0substr()\u00a0callback and observes\u00a0abcdef\u00a0becoming\u00a0cdef; it does not execute an OS command.", "supportingMedia": [{"type": "text/html", "value": "<p>Craft CMS allows any authenticated control panel user to submit an element-search condition whose element selector is evaluated as a sandboxed Twig object template. Craft\u2019s allowed&nbsp;<code>column</code>&nbsp;filter delegates property lookup to Yii&nbsp;<code>ArrayHelper</code>, outside Twig\u2019s&nbsp;<code>SecurityPolicy</code>. Repeated single-segment lookups therefore bypass the sandbox\u2019s empty property/method allowlists.</p><p>The vulnerable condition value is ultimately cast to an integer. That does not protect the secret: the template can return author ID&nbsp;<code>1</code>&nbsp;when a guessed key character is correct and an impossible ID otherwise. The JSON endpoint returns entries for the first case and an empty array for the second, forming a stable remote character oracle.</p><p>After recovering&nbsp;<code>GeneralConfig::securityKey</code>, the same user can compute Craft\u2019s generic HMAC wire format offline. Signed parameters such as&nbsp;<code>redirect</code>&nbsp;are then accepted and passed to unsandboxed&nbsp;<code>View::renderObjectTemplate()</code>, where Twig\u2019s string-callable form can invoke native PHP callables. The regression proof uses the harmless&nbsp;<code>substr()</code>&nbsp;callback and observes&nbsp;<code>abcdef</code>&nbsp;becoming&nbsp;<code>cdef</code>; it does not execute an OS command.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1336", "description": "CWE-1336 Improper neutralization of special elements used in a template engine"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.11.2", "versionStartIncluding": "5.0.0"}, {"criteria": "cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.18.9", "versionStartIncluding": "4.0.0"}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "7004884b-51e2-48e8-b4a2-5ca29e80453e", "shortName": "Hackrate", "dateUpdated": "2026-10-23T21:58:51.816Z"}}}, "cveMetadata": {"cveId": "CVE-2026-115938", "state": "PUBLISHED", "dateUpdated": "2026-11-02T15:03:03.061Z", "dateReserved": "2026-10-23T21:25:32.945Z", "assignerOrgId": "7004884b-51e2-48e8-b4a2-5ca29e80453e", "datePublished": "2026-10-23T21:58:51.816Z", "assignerShortName": "Hackrate"}, "dataVersion": "5.2"}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.11.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,4.18.9)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "cms", "source": "cna", "vendor": "craftcms"}, "product": "cms", "vendor": "craftcms"}], "created": "2026-10-23T23:30:17.662190+00:00", "updated": "2026-10-24T00:45:16.879813+00:00", "vendors": ["craftcms", "craftcms$PRODUCT$cms"]}