CVE-2026-102560 — Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth
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 cou…
Published: 2026-09-29 · CVSS: 8.6 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7