The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade libsoup3-develUpgrade libsoup-develUpgrade libsoup-docUpgrade libsoup3Upgrade libsoup-debuginfoUpgrade libsoup3-debuginfoUpgrade libsoup3-debugsourceUpgrade libsoupUpgrade libsoup3-docUpgrade libsoup-debugsource | Sep 30, 2026 | Jul 14, 2026 |
| Redhat_linux | — | No solution exists | Sep 17, 2026 | Apr 27, 2026 |
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