CVE-2026-102560
HIGH
NVD
CVSS Score
8.6
Severity
HIGH
Published
Sep 29, 2026
Vendor
unknown
Description
A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow.