CVE-2026-102560

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.

Affected Products

• ▸Libsoup < 3.7.3
• ▸Enterprise Linux

CVSS Vector