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CVE-2026-5273 is a high-severity use-after-free vulnerability in the CSS component of Google Chrome. The flaw affects Chrome versions prior to 146.0.7680.178 and can be triggered by a remote attacker using a crafted HTML page that causes incorrect lifetime management of memory in CSS processing. Successful exploitation may enable arbitrary code execution within the Chrome 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.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-rated use-after-free vulnerability in Chrome's CSS component.
A use-after-free vulnerability in Chrome CSS component patched in this release.
A high-risk use-after-free vulnerability in Chrome's CSS handling.
A high-severity use-after-free vulnerability in Chrome CSS.
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.