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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "matchCriteriaId": "67B01D49-66FA-4C76-9EB4-2B8CD61FBEB2", "versionEndExcluding": "150.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "matchCriteriaId": "5DDDA58D-2B1E-4956-9CC2-45B3017F3F0B", "versionEndExcluding": "150.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150."}], "id": "CVE-2026-6773", "lastModified": "2026-04-22T15:17:18.390", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-04-21T13:16:23.087", "references": [{"source": "security@mozilla.org", "tags": ["Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2015959"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-30/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-33/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "WebGPU: Firefox: WebGPU: Denial of Service via integer overflow", "id": "2460093", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460093"}, "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:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["A flaw was found in WebGPU. An integer overflow vulnerability can allow a remote attacker to cause a Denial of Service (DoS) by crafting a malicious input. This can lead to the affected application becoming unresponsive or crashing."], "name": "CVE-2026-6773", "public_date": "2026-04-21T12:41:05Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6773\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6773\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=2015959\nhttps://www.mozilla.org/security/advisories/mfsa2026-30/"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[150,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Firefox", "source": "cna", "vendor": "Mozilla"}, "product": "firefox", "vendor": "mozilla"}], "analysis": {"en": {"generated_at": "2026-04-22T10:07:20.710816+00:00", "value": {"mitigation_remediation": ["Upgrade Mozilla Firefox to version 150 or newer", "Upgrade Mozilla Thunderbird to version 150 or newer", "Consult the Mozilla Security Advisory (MFSA2026\u201130/33) for guidance on applying updates and verifying that the WebGPU component has been patched"], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox and Mozilla Thunderbird are affected. All releases prior to version 150 contain the vulnerability; version 150 and newer include the fix.", "description_and_impact": "An integer overflow in the Graphics: WebGPU component results in a denial\u2011of\u2011service condition. The flaw is classified as CWE\u2011190 and does not compromise data confidentiality or integrity.", "risk_and_exploitability": "The CVSS score is 7.5, indicating a high severity level. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. The available data does not detail exploitation or attack vectors."}}}}, "created": "2026-04-21T16:45:15.073074+00:00", "updated": "2026-04-22T10:15:14.511242+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox"]}