CVE-2026-21521
High · 7.4CVSS
7.4
EPSS
0.6%
Published
Jan 22, 2026
CISA due date
—
The record
Improper neutralization of escape, meta, or control sequences in Copilot allows an unauthorized attacker to disclose information over a network.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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