CVE-2026-102560
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.
- Published Sep 29, 2026
- CVSS 8.6 high
- 0.3% chance of exploitation in the next 30 days (EPSS)