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CVE-2026-15769 is an insufficient validation of untrusted input vulnerability in Linux Toolkit Theming in Google Chrome on Linux before version 150.0.7871.125. An attacker that has already compromised the Chrome renderer process may use crafted HTML content to trigger a sandbox escape. Chromium rates the vulnerability High.
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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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by an update to the FreeBSD electron42 package.
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.
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.