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CVE-2026-12025 is a high-severity insufficient validation of untrusted input vulnerability in the Network component of Google Chrome prior to 149.0.7827.115. The flaw allows a remote attacker, after first compromising the renderer process, to use a crafted HTML page to trigger leakage of cross-origin data. The issue is rooted in improper handling and validation of attacker-controlled input within Chrome's network-related processing, enabling a breakdown of expected origin isolation protections under the stated precondition.
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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.
If you can’t patch tonight, do this now.
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.
4 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 Network.
A high-severity insufficient validation of untrusted input vulnerability in Chrome Network.
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.