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CVE-2026-0899 is a high-severity out-of-bounds memory access vulnerability in the V8 JavaScript engine affecting Google Chrome prior to 144.0.7559.59. Public descriptions state that a remote attacker could trigger the issue via a crafted HTML page, potentially causing object corruption. Supporting analysis indicates the root cause was in V8’s class member initializer reparsing logic: when JavaScript class static blocks and instance fields were interleaved, lazy reparsing could mis-handle function literal ID allocation for synthetic initializer functions, leading to a function literal ID mismatch and out-of-bounds slot access. The patch reportedly introduced additional FunctionKind variants and scope pre-allocation changes to preserve initializer ordering and prevent the mismatch.
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No public exploit code observed for this vulnerability.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An out-of-bounds memory access vulnerability in the V8 JavaScript engine caused by incorrect function literal ID handling during lazy recompilation of interleaved class instance fields and static initializers. The writeup shows a trigger PoC and demonstrates exploitability to achieve arbitrary read/write primitives after modifying internal CHECKs.
An out-of-bounds memory access vulnerability in the V8 JavaScript engine in Google Chrome that can lead to object corruption when a user visits a crafted HTML page.
A high-severity vulnerability in Google Chrome’s V8 JavaScript engine fixed in Chrome 144.
A high-severity out-of-bounds memory access vulnerability in Google Chrome’s V8 JavaScript engine that could lead to memory corruption, crashes, or potentially arbitrary code execution within the browser sandbox.
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.