CVE-2026-43740

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{"affected": [{"affectedData": [{"product": "Safari", "vendor": "Apple", "versions": [{"lessThan": "26.5.2", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "iOS and iPadOS", "vendor": "Apple", "versions": [{"lessThan": "26.5.2", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "macOS", "vendor": "Apple", "versions": [{"lessThan": "26.5.2", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "tvOS", "vendor": "Apple", "versions": [{"lessThan": "26.6", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "visionOS", "vendor": "Apple", "versions": [{"lessThan": "26.6", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "watchOS", "vendor": "Apple", "versions": [{"lessThan": "26.6", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "product-security@apple.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*", "matchCriteriaId": "A3C31705-98A5-4EB4-9C89-47140142B078", "versionEndExcluding": "26.5.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "matchCriteriaId": "DB0D3014-6223-4BE5-B8D5-C8A17326859D", "versionEndExcluding": "26.5.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "matchCriteriaId": "237EDA63-32B7-40AA-8EDD-726EC67EAE38", "versionEndExcluding": "26.5.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "C3D2FD83-D448-4CD3-90ED-9FB8BF55B0D0", "versionEndExcluding": "26.5.2", "versionStartIncluding": "26.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may result in the disclosure of process memory."}], "id": "CVE-2026-43740", "lastModified": "2026-07-29T19:16:46.123", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43740", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-29T21:47:28.185079Z", "version": "2.0.3"}}]}, "published": "2026-06-29T20:17:37.600", "references": [{"source": "product-security@apple.com", "tags": ["Vendor Advisory"], "url": "https://support.apple.com/en-us/127594"}, {"source": "product-security@apple.com", "tags": ["Vendor Advisory"], "url": "https://support.apple.com/en-us/127595"}, {"source": "product-security@apple.com", "tags": ["Vendor Advisory"], "url": "https://support.apple.com/en-us/127685"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/128068"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/128069"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/128070"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory", "id": "2500538", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500538"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-416", "details": ["The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the disclosure of process memory.", "A flaw was found in WebKitGTK. Processing maliciously crafted web content can trigger a use-after-free due to improper memory handling, leading to disclosure of process memory."], "name": "CVE-2026-43740", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "pywebkitgtk", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "webkitgtk", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "webkitgtk3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "webkitgtk4", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "webkit2gtk3", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "webkit2gtk3", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43740\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43740\nhttps://bugs.webkit.org/show_bug.cgi?id=308046\nhttps://webkitgtk.org/security/WSA-2026-0004.html"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "iOS and iPadOS", "source": "cna", "vendor": "Apple"}, "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "macOS", "source": "cna", "vendor": "Apple"}, "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Safari", "source": "cna", "vendor": "Apple"}, "product": "safari", "vendor": "apple"}], "created": "2026-06-29T22:15:04.207464+00:00", "updated": "2026-08-04T19:00:10.771164+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$safari"]}