CVE-2026-20665

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{"affected": [{"affectedData": [{"product": "Safari", "vendor": "Apple", "versions": [{"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "iOS and iPadOS", "vendor": "Apple", "versions": [{"lessThan": "18.7.7", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "macOS", "vendor": "Apple", "versions": [{"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "tvOS", "vendor": "Apple", "versions": [{"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "visionOS", "vendor": "Apple", "versions": [{"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}, {"product": "watchOS", "vendor": "Apple", "versions": [{"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "product-security@apple.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*", "matchCriteriaId": "993386B4-0570-414F-B4A6-3E65F5704903", "versionEndExcluding": "26.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "matchCriteriaId": "118313FD-8CF6-4412-B1A8-4BC3D5C2F519", "versionEndExcluding": "18.7.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "matchCriteriaId": "F201257D-2F7C-43AA-BD51-ED5EC98F99E0", "versionEndExcluding": "26.4", "versionStartIncluding": "26.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "matchCriteriaId": "684E10EB-D01A-4E80-8764-B48B554B0B5E", "versionEndExcluding": "18.7.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "matchCriteriaId": "F7F08C35-7A60-4FEC-8D44-533902F43EDD", "versionEndExcluding": "26.4", "versionStartIncluding": "26.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "DCFD15D9-91CA-4342-9F7E-A219B459B755", "versionEndExcluding": "26.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "matchCriteriaId": "A906E2B7-B83B-4AD0-B00F-BEDEF2EDB844", "versionEndExcluding": "26.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "matchCriteriaId": "113B9705-BFF0-4357-B1AB-F57052F32361", "versionEndExcluding": "26.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "matchCriteriaId": "F6EAF0A5-7CFF-4EF6-9BC7-DB25B213F753", "versionEndExcluding": "26.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced."}, {"lang": "es", "value": "Este problema se abord\u00f3 mediante una gesti\u00f3n de estado mejorada. Este problema se solucion\u00f3 en Safari 26.4, iOS 18.7.7 y iPadOS 18.7.7, iOS 26.4 y iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. El procesamiento de contenido web creado con fines maliciosos puede impedir que se aplique la Pol\u00edtica de Seguridad de Contenido."}], "id": "CVE-2026-20665", "lastModified": "2026-06-17T10:17:39.073", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "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:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20665", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-25T19:30:29.669623Z", "version": "2.0.3"}}]}, "published": "2026-03-25T01:17:05.050", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126792"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126793"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126794"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126797"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126798"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126799"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126800"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced", "id": "2453002", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453002"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L", "status": "draft"}, "cwe": "CWE-693", "details": ["This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.", "A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to improper state management."], "mitigation": {"lang": "en:us", "value": "Do not process or load untrusted web content with WebKitGTK.\nIn Red Hat Enterprise Linux 7, the following packages require WebKitGTK4: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp.\nThis vulnerability can only be exploited when these packages are installed in the system and being used via a graphical interface to process untrusted web content, via GNOME for example. In gnome-shell, the vulnerability can be exploited by an attacker from the local network without user interaction.\nTo mitigate this vulnerability, consider removing these packages. Note that some of these packages are required by GNOME, removing them will also remove GNOME and other packages, breaking functionality. However, the server can still be used via the terminal interface.\nAdditionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality."}, "name": "CVE-2026-20665", "package_state": [{"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": "Affected", "package_name": "webkitgtk3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "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": "2026-03-28T20:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-20665\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-20665\nhttps://webkitgtk.org/security/WSA-2026-0002.html"], "statement": "To exploit this flaw, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with a moderate severity.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,18.7.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "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": "[0,26.4)"}}], "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": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Safari", "source": "cna", "vendor": "Apple"}, "product": "safari", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "tvOS", "source": "cna", "vendor": "Apple"}, "product": "tvos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "visionOS", "source": "cna", "vendor": "Apple"}, "product": "visionos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "watchOS", "source": "cna", "vendor": "Apple"}, "product": "watchos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-03-26T14:29:19.957596+00:00", "value": {"mitigation_remediation": ["Update to Safari 26.4, iOS 18.7.7 or 26.4, iPadOS 18.7.7 or 26.4, macOS Tahoe\u202f26.4, tvOS\u202f26.4, visionOS\u202f26.4 and watchOS\u202f26.4 as released by Apple.", "If an update cannot be applied immediately, limit exposure by disabling foreign scripting capabilities or restricting access to untrusted sites.", "Confirm that the latest OS and browser versions are installed and that the Content Security Policy is functioning correctly.", "Keep monitoring Apple security advisories for further updates or temporary workarounds."], "summary": {"action": "Apply Patch", "impact": "Content Security Policy bypass"}, "threat_synthesis": {"affected_systems": "The problem exists in Apple\u2019s Safari browser, iOS and iPadOS, macOS, tvOS, visionOS and watchOS. Specifically, the unpatched versions are Safari 26.4, iOS 18.7.7 and iOS 26.4, iPadOS 18.7.7 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4 and watchOS 26.4. Updating to the listed releases removes the vulnerability.", "description_and_impact": "The flaw results from improper state handling while parsing web pages, allowing attackers to craft malicious content that bypasses the browser\u2019s Content Security Policy enforcement. This can lead to execution of unauthorized scripts or loading of disallowed resources, creating a pathway for cross\u2011site scripting or other code\u2011execution attacks.", "risk_and_exploitability": "The CVSS score of 6.5 indicates moderate severity while the EPSS score of less than 1% reflects a low probability of exploitation. The vulnerability is not listed in the CISA KEV catalog. Even without known widespread exploitation, the attack vector likely involves a user visiting a malicious or compromised web page, so timely remediation is recommended."}}}}, "created": "2026-03-25T11:36:02.166854+00:00", "title": "Web Content Processing Bypass Prevents Content Security Policy Enforcement", "updated": "2026-03-27T09:50:27.564457+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$safari", "apple$PRODUCT$tvos", "apple$PRODUCT$visionos", "apple$PRODUCT$watchos"]}