ACTIVELY EXPLOITED

CVE-2021-38003: Google Chromium V8 Memory Corruption Vulnerability

Facts
VendorGoogle
ProductChromium V8
Actively exploitedYes
Added to CISA KEV3 Nov 2021
CISA federal deadline17 Nov 2021
Weakness (CWE)CWE-122, CWE-755

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

SOURCES

Other Google flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.