High severity8.6NVD Advisory· Published Sep 29, 2026
CVE-2026-102559
CVE-2026-102559
Description
A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer overflow.
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Affected products
1Patches
Vulnerability mechanics
References
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