CVE-2026-106243

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{"bugzilla": {"description": "chromium-browser: Incomplete cleanup in Proxy Auth", "id": "2546779", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546779"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["Incomplete cleanup in Proxy Auth in Google Chrome prior to 155.0.8059.39 allowed an adjacent attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: High)", "An incomplete cleanup flaw was found in the Proxy Auth component of the Chromium browser.\nUpstream bug(s):\nhttps://issues.chromium.org/issues/533426590"], "name": "CVE-2026-106243", "public_date": "2026-10-06T18:41:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106243\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106243\nhttps://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html\nhttps://issues.chromium.org/issues/533426590"], "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": "[155.0.8059.39,155.0.8059.39)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "created": "2026-10-07T03:00:12.445995+00:00", "title": "Proxy Authentication Cleanup Failure Allows Adjacent Attacker to Leak Sensitive Data", "updated": "2026-10-07T06:30:13.216663+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}