{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5911", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-04-08T19:34:46.189Z", "datePublished": "2026-04-08T21:21:05.248Z", "dateUpdated": "2026-04-09T15:07:52.663Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "147.0.7727.55", "status": "affected", "lessThan": "147.0.7727.55", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Policy bypass in ServiceWorkers in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Policy bypass"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-04-08T21:21:05.248Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html"}, {"url": "https://issues.chromium.org/issues/485785246"}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-693", "lang": "en", "description": "CWE-693 Protection Mechanism Failure"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-09T15:07:13.557844Z", "id": "CVE-2026-5911", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-09T15:07:52.663Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Policy bypass in ServiceWorkers in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)"}], "id": "CVE-2026-5911", "lastModified": "2026-04-09T16:16:35.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-04-08T22:16:31.010", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/485785246"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "chromium-browser: Policy bypass in ServiceWorkers", "id": "2456810", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456810"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["A policy bypass flaw was found in the ServiceWorkers component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=485785246"], "name": "CVE-2026-5911", "public_date": "2026-04-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-5911\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-5911\nhttps://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html\nhttps://issues.chromium.org/issues/485785246"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[147.0.7727.55,147.0.7727.55)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "analysis": {"en": {"generated_at": "2026-04-09T16:36:49.938398+00:00", "value": {"mitigation_remediation": ["Install the latest Chrome update (147.0.7727.55 or newer)", "Restart Chrome to ensure the update is fully applied"], "summary": {"action": "Patch Immediately", "impact": "CSP Bypass"}, "threat_synthesis": {"affected_systems": "The vulnerability impacts Google Chrome on desktop platforms running any version prior to 147.0.7727.55. Users of the stable channel who have not yet updated to this version are susceptible.", "description_and_impact": "A policy bypass in Chrome ServiceWorkers allows a remote attacker to circumvent the Content Security Policy by delivering a crafted HTML page. This flaw can enable injection and execution of arbitrary scripts within the context of a legitimate web page, effectively creating a cross\u2011site scripting condition. The weakness aligns with CWE\u201179 (XSS) and CWE\u2011693 (Security Misconfiguration).", "risk_and_exploitability": "The assigned CVSS score of 4.3 indicates low overall severity, and the EPSS score of less than 1% suggests a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. Exploitation would require a user to visit a malicious web page designed to trigger the ServiceWorker policy bypass, after which the attacker could run arbitrary code on the victim\u2019s browser."}}}}, "created": "2026-04-09T08:16:41.848822+00:00", "updated": "2026-04-10T09:40:14.774801+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}