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CVE-2026-47644 is an information disclosure vulnerability in Copilot Chat for Microsoft Edge caused by improper neutralization of special elements in output used by a downstream component. The flaw is classified as an injection issue and affects how Copilot Chat output is handled by a downstream component, creating a condition in which crafted content can cause unintended disclosure of information. Microsoft characterizes the issue as remotely exploitable over a network by an unauthorized attacker.
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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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An injection/information disclosure vulnerability in Copilot Chat for Microsoft Edge that can expose information over a network.
A critical information disclosure vulnerability in Copilot Chat for Microsoft Edge caused by improper neutralization of special elements in output used by a downstream component.
A Microsoft vulnerability addressed in the June 2026 security updates; no further details provided in the content.
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.