CVE-2026-102558 — Vulnerability intelligence

gnome — libsoup

Published: 2026-09-29T17:15:32.062Z

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 max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame data.

Sources

• CVE-2026-102558
• Vendor Advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Mitigation, Vendor Advisory
• Issue Tracking, Vendor Advisory
• CVE-2026-102558
• Original advisory
• Original advisory