Vulnerability · Gnome Libsoup
CVE-2026-102559
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.
CVSS score (v3.1)8.6High
Fixed in 3.7.3
Not on CISA KEV list
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Show me how to fix itTimeline
- Published by NVD
- Last updated by NVD
Affected products
| Product | Versions |
|---|---|
| Gnome Libsoup | up to before 3.7.3 |
| Redhat Enterprise Linux | 10.0 only; 7.0 only; 8.0 only; 9.0 only |
Sources: NVD and CISA known exploited vulnerabilities catalogue.