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CVE-2026-5280 is a high-severity use-after-free vulnerability in the WebCodecs component of Google Chrome. The flaw affects Chrome versions prior to 146.0.7680.178 and can be triggered by a remote attacker through a crafted HTML page. As a memory-safety error, the vulnerability arises when freed memory is subsequently reused, creating conditions that can lead to memory corruption within the browser process. Google and Chromium classified the issue as High severity.
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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 WebCodecs.
A use-after-free vulnerability in Chrome WebCodecs component patched in this release.
A high-severity use-after-free vulnerability in Chrome WebCodecs.
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.