CVE-2026-102560 — Vulnerability intelligence

gnome — libsoup

Published: 2026-09-29T17:15:36.011Z

CVSS

8.6

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

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.

Sources

• CVE-2026-102560
• Third Party Advisory
• Third Party Advisory
• Original advisory
• Original advisory
• Original advisory
• Mitigation, Third Party Advisory
• Issue Tracking, Patch, Third Party Advisory
• CVE-2026-102560
• Original advisory