{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6305", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-04-14T18:12:22.696Z", "datePublished": "2026-04-15T19:04:50.926Z", "dateUpdated": "2026-04-16T03:56:17.490Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "147.0.7727.101", "status": "affected", "lessThan": "147.0.7727.101", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Heap buffer overflow", "cweId": "CWE-122"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-04-15T19:04:50.926Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html"}, {"url": "https://issues.chromium.org/issues/496618639"}]}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-15T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-6305"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-16T03:56:17.490Z"}}]}}

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{"bugzilla": {"description": "chromium-browser: Heap buffer overflow in PDFium", "id": "2458782", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458782"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A heap buffer overflow flaw was found in the PDFium component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=496618639"], "name": "CVE-2026-6305", "public_date": "2026-04-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6305\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6305\nhttps://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html\nhttps://issues.chromium.org/issues/496618639"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,147.0.7727.101)"}}], "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": "2026-04-16T02:24:58.669964+00:00", "value": {"mitigation_remediation": ["Update Google Chrome to version 147.0.7727.101 or later to remove the PDFium vulnerability", "If an update cannot be applied immediately, disable the built\u2011in PDF viewer or use a third\u2011party PDF reader to prevent the exploit from being triggered", "Verify that Chrome\u2019s sandbox is enabled and has not been overridden by custom policies or extensions"], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Google Chrome desktop versions prior to 147.0.7727.101 are affected. The vulnerability applies to all builds that ship with the vulnerable PDFium code during the stable release channel.", "description_and_impact": "A heap buffer overflow and out-of-bounds write exist in PDFium, the PDF rendering engine used by Google Chrome. A crafted PDF file can trigger memory corruption that allows a remote attacker to execute arbitrary code within the browser\u2019s sandbox. The flaw is characterized as a heap buffer overflow (CWE-122) and an out-of-bounds write (CWE-787). Once the exploit is triggered, the attacker can potentially escape the sandbox and compromise the host system.", "risk_and_exploitability": "The vulnerability has a CVSS score of 8.8, indicating high severity, but no EPSS score is currently available, and it is not listed in the CISA KEV catalog. The most likely attack vector involves a remote attacker delivering a malicious PDF via email, web download, or other file transfer methods. Once a user opens the compromised PDF in Chrome, the flaw can be leveraged to gain arbitrary code execution while still confined initially to the sandbox; however, subsequent exploits could escape to the host. Given the severity and the ease of exploitation, this poses a significant risk to users who do not promptly update their browsers."}}}}, "created": "2026-04-15T21:45:14.060108+00:00", "updated": "2026-04-16T02:30:21.688739+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}