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Vendor Workaround
To mitigate avoid connecting custom handlers to SoupWebsocketConnection::pong, or avoid WebSocket use with untrusted peers.
Tracking
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Tue, 29 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| Weaknesses | CWE-843 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
|
| References |
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| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-29T17:24:13.042Z
Reserved: 2026-09-29T13:19:05.617Z
Link: CVE-2026-102556
No data.
Status : Received
Published: 2026-09-29T17:17:06.460
Modified: 2026-09-29T17:17:06.460
Link: CVE-2026-102556
No data.
OpenCVE Enrichment
No data.
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CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')