What is GHSA-q4x2-vf8m-46j5?

GHSA-q4x2-vf8m-46j5 is a security advisory published by GitHub Security Advisories with High severity. A flaw was found in libsoup. When handling an incoming WebSocket Pong frame,...

Which CVE IDs does GHSA-q4x2-vf8m-46j5 cover?

GHSA-q4x2-vf8m-46j5 covers the following CVE IDs: CVE-2026-102556. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-q4x2-vf8m-46j5?

GHSA-q4x2-vf8m-46j5 has a CVSS v3 base score of 8.6, published by GitHub Security Advisories.

GHSA-q4x2-vf8m-46j5HighCVSS 8.6

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame,...

Vendor

GitHub Security Advisories

Published

September 29, 2026

Last Modified

September 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-102556 →

📋 Description

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-102556
https://access.redhat.com/security/cve/CVE-2026-102556
https://bugzilla.redhat.com/show_bug.cgi?id=2543229
https://github.com/advisories/GHSA-q4x2-vf8m-46j5