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A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libsoupUpgrade libsoup-devel | May 7, 2026 | May 6, 2026 |
| Amazon_linux_2023 | — | Upgrade libsoup-develUpgrade libsoup3-docUpgrade libsoupUpgrade libsoup-debugsourceUpgrade libsoup3Upgrade libsoup3-debugsourceUpgrade libsoup-debuginfoUpgrade libsoup-docUpgrade libsoup3-develUpgrade libsoup3-debuginfo | May 28, 2026 | Mar 30, 2026 |
| Oracle_linux | — | Upgrade libsoup3-develUpgrade libsoup3-docUpgrade libsoup3Upgrade libsoupUpgrade libsoup-devel | May 7, 2026 | Mar 30, 2026 |
| Redhat_linux | — | No solution existsUpgrade libsoup3Upgrade libsoupUpgrade libsoup3-debuginfoUpgrade libsoup3-debugsourceUpgrade libsoup-develUpgrade libsoup-debuginfoUpgrade libsoup3-develUpgrade libsoup-debugsourceUpgrade libsoup3-doc | May 8, 2026 | Mar 30, 2026 |
| Rocky_linux | — | Upgrade libsoup-develUpgrade libsoupUpgrade libsoup-debugsourceUpgrade libsoup3-debugsourceUpgrade libsoup3Upgrade libsoup-debuginfoUpgrade libsoup3-develUpgrade libsoup3-debuginfo | May 11, 2026 | May 7, 2026 |
| Ubuntu | — | Upgrade libsoup2.4-1Upgrade gir1.2-soup-3.0 (Ubuntu Pro)Upgrade libsoup2.4-1 (Ubuntu Pro)Upgrade gir1.2-soup-2.4Upgrade libsoup-3.0-common (Ubuntu Pro)Upgrade libsoup-gnome2.4-dev (Ubuntu Pro)Upgrade libsoup2.4-common (Ubuntu Pro)Upgrade libsoup2.4-commonUpgrade libsoup-gnome2.4-1 (Ubuntu Pro)Upgrade libsoup2.4-tests (Ubuntu Pro)Upgrade libsoup2.4-devUpgrade libsoup-gnome-2.4-1Upgrade gir1.2-soup-2.4 (Ubuntu Pro)Upgrade libsoup2.4-testsUpgrade libsoup-2.4-1Upgrade libsoup-3.0-devUpgrade libsoup-3.0-0 (Ubuntu Pro)Upgrade libsoup-gnome2.4-1Upgrade libsoup-2.4-1 (Ubuntu Pro)Upgrade libsoup-gnome2.4-devUpgrade libsoup-3.0-0Upgrade gir1.2-soup-3.0Upgrade libsoup2.4-dev (Ubuntu Pro)Upgrade libsoup-3.0-commonUpgrade libsoup-3.0-dev (Ubuntu Pro)Upgrade libsoup-gnome-2.4-1 (Ubuntu Pro) | Jul 12, 2026 | Jul 9, 2026 |
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