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CVE-2026-91735 is a high-severity incorrect-authorization vulnerability in Google Chrome WebUI prior to version 153.0.8010.47. A compromised renderer process can abuse insufficient authorization enforcement through a crafted HTML page to potentially execute arbitrary code outside Chrome's sandbox.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
High-severity incorrect-authorization vulnerability in Chrome WebUI.
A High-severity incorrect-authorization vulnerability in Chrome WebUI.
A high-severity incorrect-authorization vulnerability in Chrome WebUI that could allow an attacker with an already-compromised renderer process to escape the browser sandbox and execute arbitrary code using a crafted HTML page.
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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.