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CVE-2026-15769 is a high-severity insufficient validation of untrusted input vulnerability in Linux Toolkit Theming in Google Chrome on Linux. It affects Chrome versions prior to 150.0.7871.125. The flaw allows a remote attacker, after first compromising the renderer process, to potentially escape Chrome’s sandbox by using a crafted HTML page. The issue is classified as CWE-20 and arises from improper validation of attacker-controlled input handled by the Linux-specific theming integration layer.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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-severity insufficient validation of untrusted input vulnerability in Chrome's Linux Toolkit Theming component.
A high-severity Chrome vulnerability categorized as CWE-20 (input validation issue).
A high-severity sandbox escape vulnerability in Google Chrome on Linux caused by insufficient validation of untrusted input in Linux Toolkit Theming. A remote attacker who has already compromised the renderer process could potentially escape the sandbox via a crafted HTML page.
A high-severity insufficient validation of untrusted input vulnerability in Chrome's Linux Toolkit Theming component.
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.