{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86544", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-07T22:18:53.568Z", "datePublished": "2026-09-07T23:03:21.458Z", "dateUpdated": "2026-09-07T23:03:21.458Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-07T23:03:21.458Z"}, "datePublic": "2026-08-16T00:00:00.000Z", "title": "knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions", "descriptions": [{"lang": "en", "value": "knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations. Attackers with read-restricted sessions can exploit code.replace to modify permission configurations and escalate privileges on subsequent calls."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Incorrect Authorization", "cweId": "CWE-863", "type": "CWE"}]}], "affected": [{"vendor": "knowns-dev", "product": "knowns", "defaultStatus": "unaffected", "packageURL": "pkg:npm/knowns", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "0.30.0"}, {"version": "0.30.0", "status": "unaffected", "versionType": "semver"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-w323-3wpx-f7g5)"}, {"url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140", "tags": ["technical-description"], "name": "ActionRegistry omits the mutating code actions; ClassifyAction falls back to CapRead (v0.29.1)"}, {"url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60", "tags": ["technical-description"], "name": "Guard middleware gates on that classification (v0.29.1)"}, {"url": "https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b", "tags": ["patch"], "name": "knowns fix commit a2c98fc5c313"}, {"url": "https://github.com/knowns-dev/knowns/releases/tag/v0.30.0", "tags": ["release-notes"], "name": "knowns v0.30.0 Release Notes"}, {"name": "VulnCheck Advisory: knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions"}], "credits": [{"lang": "en", "value": "Tong Hoang Gia", "type": "reporter"}, {"lang": "en", "value": "Nguyen Huy Hoang", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/knowns", "product": "knowns", "vendor": "knowns-dev", "versions": [{"lessThan": "0.30.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "0.30.0", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations. Attackers with read-restricted sessions can exploit code.replace to modify permission configurations and escalate privileges on subsequent calls."}], "id": "CVE-2026-86544", "lastModified": "2026-09-07T23:16:54.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "[email protected]", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.2, "baseSeverity": "HIGH", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-09-07T23:16:54.303", "references": [{"source": "[email protected]", "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60"}, {"source": "[email protected]", "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140"}, {"source": "[email protected]", "url": "https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b"}, {"source": "[email protected]", "url": "https://github.com/knowns-dev/knowns/releases/tag/v0.30.0"}, {"source": "[email protected]", "url": "https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5"}, {"source": "[email protected]", "url": "https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.30.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "0.30.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "knowns", "source": "cna", "vendor": "knowns-dev"}, "product": "knowns", "vendor": "knowns-dev"}], "created": "2026-09-08T00:30:17.197925+00:00", "updated": "2026-09-08T00:30:17.327459+00:00", "vendors": ["knowns-dev", "knowns-dev$PRODUCT$knowns"]}