{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82810", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-31T05:03:03.440Z", "datePublished": "2026-08-31T16:45:09.367Z", "dateUpdated": "2026-08-31T16:45:09.367Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-31T16:45:09.367Z"}, "title": "extension.vn 2FA Authenticator Extension Background Service Worker chrome.runtime.onMessageExternal.addListener information disclosure", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-200", "lang": "en", "description": "Information Disclosure"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-284", "lang": "en", "description": "Improper Access Controls"}]}], "affected": [{"vendor": "extension.vn", "product": "2FA Authenticator Extension", "versions": [{"version": "1.0.0.2", "status": "affected"}], "cpes": ["cpe:2.3:a:extension.vn:2fa_authenticator_extension:*:*:*:*:*:*:*:*"], "modules": ["Background Service Worker"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome. The impacted element is the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. Executing a manipulation of the argument sender.id can lead to information disclosure. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R", "baseSeverity": "LOW"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.3, "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R", "baseSeverity": "LOW"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 1.7, "vectorString": "AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-08-31T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-31T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-31T07:08:09.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "DRXYJ (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/397229", "name": "VDB-397229 | extension.vn 2FA Authenticator Extension Background Service Worker chrome.runtime.onMessageExternal.addListener information disclosure", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/397229/cti", "name": "VDB-397229 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-82810", "name": "CVE-2026-82810 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/875249", "name": "Submit #875249 | extension.vn 2FA Authenticator Chrome extension 1.0.0.2 Information Disclosure", "tags": ["third-party-advisory"]}, {"url": "https://github.com/xryj920/chrome_extensions/blob/main/extension.vn%202FA%20Authenticator%201.0.0.2%20exposes%20stored%20TOTP%20secrets%20through%20an%20unrestricted%20external%20message%20handler", "tags": ["exploit"]}], "x_generator": ["VulDB PVTS v202608"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:extension.vn:2fa_authenticator_extension:*:*:*:*:*:*:*:*"], "modules": ["Background Service Worker"], "product": "2FA Authenticator Extension", "vendor": "extension.vn", "versions": [{"status": "affected", "version": "1.0.0.2"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A weakness has been identified in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome. The impacted element is the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. Executing a manipulation of the argument sender.id can lead to information disclosure. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure."}], "id": "CVE-2026-82810", "lastModified": "2026-08-31T20:56:08.800", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 1.7, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.1, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.9, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "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:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-08-31T17:17:47.313", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/xryj920/chrome_extensions/blob/main/extension.vn%202FA%20Authenticator%201.0.0.2%20exposes%20stored%20TOTP%20secrets%20through%20an%20unrestricted%20external%20message%20handler"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-82810"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/875249"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/397229"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/397229/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-284"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.2"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "2FA Authenticator Extension", "source": "cna", "vendor": "extension.vn"}, "product": "2fa_authenticator_extension", "vendor": "extension.vn"}], "created": "2026-08-31T18:30:03.948334+00:00", "updated": "2026-08-31T21:20:56.096721+00:00", "vendors": ["extension.vn", "extension.vn$PRODUCT$2fa_authenticator_extension"]}