What is CVE-2026-43966?

CVE-2026-43966 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. HTTP Response Splitting via Non-VCHAR Bytes in cow_http_struct_hd:escape_string/2

Which CVE IDs does CVE-2026-43966 cover?

CVE-2026-43966 covers the following CVE IDs: CVE-2026-43966. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2026-43966Low

HTTP Response Splitting via Non-VCHAR Bytes in cow_http_struct_hd:escape_string/2

Vendor

Microsoft Security Response Center (MSRC)

Published

June 26, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-43966 →