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CVE-2026-87657 is a medium-severity use-after-free vulnerability in the V8 JavaScript engine of Google Chrome before version 153.0.8010.36. A crafted HTML page can trigger the stale-memory condition after an attacker has compromised the Chrome renderer process, enabling memory reads within the browser 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.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A medium-severity use-after-free vulnerability in V8 in Google Chrome before version 153.0.8010.36. An attacker that has already compromised the renderer process could use a crafted HTML page to read memory within the Chrome sandbox.
A medium-severity use-after-free vulnerability in Chrome's V8 component that permits memory disclosure within the browser sandbox after renderer-process compromise.
A medium-severity use-after-free flaw in Chrome's V8 component that permits an attacker who has already compromised the renderer process to read sandboxed memory.
A newly published vulnerability tracked as CVE-2026-87657 affecting Debian Linux 12.0, 13.0, and 14.0. The provided CVSS v3 vector indicates network reachability, low attack complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impact.
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.