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CVE-2026-65597 is a DOM-based cross-site scripting vulnerability in n8n affecting versions before 1.123.64, 2.x before 2.29.8, and before 2.30.1. The flaw is in the HTML preview functionality, which renders execution output into an iframe using srcdoc without applying the sandbox attribute. A sanitizer bypass allows attacker-controlled script to execute in the same-origin context as the editor. When a user opens the preview, the injected script runs within the authenticated application context and can interact with application functionality through the victim's browser session.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.