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CVE-2026-106398 is an incorrect authorization vulnerability in the Media component of Google Chrome before version 155.0.8059.39. A remote attacker can use a crafted HTML page to disclose cross-origin data, compromising confidentiality across web origins. The specific vulnerable function and underlying authorization-check failure are not identified.
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No public exploit code observed for this vulnerability.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An incorrect authorization vulnerability in Google Chrome's Media component before version 155.0.8059.39 permits cross-origin data leakage through a crafted HTML page. Exploitation requires user interaction. The plugin identifies affected Debian Chromium packages as lacking a vendor-supplied patch and reports no known solution. The CVSS v3 base score is 4.3 (Medium).
An incorrect authorization vulnerability in Google Chrome's Media component allows a remote attacker to leak cross-origin data through a crafted HTML page. It affects versions before 155.0.8059.39 and has a Medium Chromium security severity.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.