{"id":"USN-8975-1","summary":"libsoup2.4, libsoup3 vulnerabilities","details":"It was discovered that libsoup incorrectly handled certain WebSocket\nframes. A remote attacker could possibly use this issue to cause an\napplication to crash or expose sensitive information. This issue only\naffected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu\n26.10. (CVE-2026-12478)\n\nIt was discovered that libsoup incorrectly handled certain data URIs. A\nremote attacker could possibly use this issue to cause an application to\ncrash or expose sensitive information. This issue only affected Ubuntu\n22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10.\n(CVE-2026-102555)\n\nIt was discovered that libsoup incorrectly handled certain WebSocket\nmessages. A remote attacker could possibly use this issue to cause an\napplication to crash. This issue only affected Ubuntu 18.04 LTS, Ubuntu\n20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and\nUbuntu 26.10. (CVE-2026-102556)\n\nIt was discovered that libsoup incorrectly handled fragmented WebSocket\nmessages. A remote attacker could possibly use this issue to cause an\napplication to crash. (CVE-2026-102557)\n\nIt was discovered that libsoup incorrectly handled certain WebSocket\nframes. A remote attacker could possibly use this issue to cause an\napplication to crash. This issue only affected Ubuntu 18.04 LTS, Ubuntu\n20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and\nUbuntu 26.10. (CVE-2026-102558)\n\nIt was discovered that libsoup incorrectly handled large WebSocket\nmessages. An attacker could possibly use this issue to cause an\napplication to crash. (CVE-2026-102559)\n\nIt was discovered that libsoup incorrectly handled compressed WebSocket\nmessages. An attacker could possibly use this issue to cause an\napplication to crash. This issue only affected Ubuntu 20.04 LTS, Ubuntu\n22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10.\n(CVE-2026-102560)\n\nIt was discovered that libsoup did not properly handle certain HTTP\nrequests. A remote attacker could possibly use this issue to inject\narbitrary HTTP requests. (CVE-2026-103399)\n\nIt was discovered that libsoup incorrectly handled proxy credentials. A\nremote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2026-12547)\n\nIt was discovered that libsoup incorrectly handled multipart messages. A\nremote attacker could possibly use this issue to cause an application to\ncrash or obtain sensitive information. (CVE-2026-12548)","modified":"2026-11-04T03:43:15.637548273Z","published":"2026-11-03T16:06:30Z","related":["UBUNTU-CVE-2026-102555","UBUNTU-CVE-2026-102556","UBUNTU-CVE-2026-102557","UBUNTU-CVE-2026-102558","UBUNTU-CVE-2026-102559","UBUNTU-CVE-2026-102560","UBUNTU-CVE-2026-103399","UBUNTU-CVE-2026-12478","UBUNTU-CVE-2026-12547","UBUNTU-CVE-2026-12548"],"upstream":["CVE-2026-102555","CVE-2026-102556","CVE-2026-102557","CVE-2026-102558","CVE-2026-102559","CVE-2026-102560","CVE-2026-103399","CVE-2026-12478","CVE-2026-12547","CVE-2026-12548","UBUNTU-CVE-2026-102555","UBUNTU-CVE-2026-102556","UBUNTU-CVE-2026-102557","UBUNTU-CVE-2026-102558","UBUNTU-CVE-2026-102559","UBUNTU-CVE-2026-102560","UBUNTU-CVE-2026-103399","UBUNTU-CVE-2026-12478","UBUNTU-CVE-2026-12547","UBUNTU-CVE-2026-12548"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8975-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-12478"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-12547"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-12548"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102555"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102556"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102557"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102558"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102559"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102560"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-103399"}],"affected":[{"package":{"name":"libsoup2.4","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.52.2-1ubuntu0.3+esm9"}]}],"versions":["2.50.0-2debian1","2.52.1-1","2.52.2-1","2.52.2-1ubuntu0.1","2.52.2-1ubuntu0.2","2.52.2-1ubuntu0.3","2.52.2-1ubuntu0.3+esm1","2.52.2-1ubuntu0.3+esm2","2.52.2-1ubuntu0.3+esm3","2.52.2-1ubuntu0.3+esm4","2.52.2-1ubuntu0.3+esm5","2.52.2-1ubuntu0.3+esm6","2.52.2-1ubuntu0.3+esm7","2.52.2-1ubuntu0.3+esm8"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_name":"gir1.2-soup-2.4","binary_version":"2.52.2-1ubuntu0.3+esm9"},{"binary_version":"2.52.2-1ubuntu0.3+esm9","binary_name":"libsoup-gnome2.4-1"},{"binary_version":"2.52.2-1ubuntu0.3+esm9","binary_name":"libsoup2.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8975-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2026-12547","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-12548","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102555","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-102557"},{"id":"CVE-2026-102559","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-103399","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"score":"medium","type":"Ubuntu"}]}]}}},{"package":{"name":"libsoup2.4","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.62.1-1ubuntu0.4+esm10"}]}],"versions":["2.60.1-1","2.60.2-1","2.60.2-2","2.60.3-1","2.61.90-1","2.62.0-1","2.62.1-1","2.62.1-1ubuntu0.1","2.62.1-1ubuntu0.3","2.62.1-1ubuntu0.4","2.62.1-1ubuntu0.4+esm1","2.62.1-1ubuntu0.4+esm2","2.62.1-1ubuntu0.4+esm3","2.62.1-1ubuntu0.4+esm4","2.62.1-1ubuntu0.4+esm5","2.62.1-1ubuntu0.4+esm6","2.62.1-1ubuntu0.4+esm7","2.62.1-1ubuntu0.4+esm8","2.62.1-1ubuntu0.4+esm9"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"gir1.2-soup-2.4","binary_version":"2.62.1-1ubuntu0.4+esm10"},{"binary_name":"libsoup-gnome2.4-1","binary_version":"2.62.1-1ubuntu0.4+esm10"},{"binary_name":"libsoup2.4-1","binary_version":"2.62.1-1ubuntu0.4+esm10"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-12547"},{"id":"CVE-2026-12548","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102555","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102556","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102557","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102558","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102559","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-103399","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8975-1.json"}},{"package":{"name":"libsoup2.4","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.70.0-1ubuntu0.5+esm5"}]}],"versions":["2.68.2-0ubuntu1","2.68.2-1","2.68.2-2","2.68.2-2build2","2.69.90-1","2.70.0-1","2.70.0-1ubuntu0.1","2.70.0-1ubuntu0.2","2.70.0-1ubuntu0.3","2.70.0-1ubuntu0.4","2.70.0-1ubuntu0.5","2.70.0-1ubuntu0.5+esm1","2.70.0-1ubuntu0.5+esm2","2.70.0-1ubuntu0.5+esm3","2.70.0-1ubuntu0.5+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"2.70.0-1ubuntu0.5+esm5","binary_name":"gir1.2-soup-2.4"},{"binary_name":"libsoup-gnome2.4-1","binary_version":"2.70.0-1ubuntu0.5+esm5"},{"binary_version":"2.70.0-1ubuntu0.5+esm5","binary_name":"libsoup2.4-1"},{"binary_name":"libsoup2.4-tests","binary_version":"2.70.0-1ubuntu0.5+esm5"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-12547"},{"id":"CVE-2026-12548","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102555","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102556","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102557","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102558","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102559","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102560","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-103399","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8975-1.json"}},{"package":{"name":"libsoup2.4","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libsoup2.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.74.2-3ubuntu0.10"}]}],"versions":["2.72.0-3ubuntu3","2.74.1-1","2.74.2-2","2.74.2-3","2.74.2-3ubuntu0.1","2.74.2-3ubuntu0.2","2.74.2-3ubuntu0.3","2.74.2-3ubuntu0.4","2.74.2-3ubuntu0.5","2.74.2-3ubuntu0.6","2.74.2-3ubuntu0.7","2.74.2-3ubuntu0.8","2.74.2-3ubuntu0.9"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gir1.2-soup-2.4","binary_version":"2.74.2-3ubuntu0.10"},{"binary_name":"libsoup-gnome2.4-1","binary_version":"2.74.2-3ubuntu0.10"},{"binary_name":"libsoup2.4-1","binary_version":"2.74.2-3ubuntu0.10"},{"binary_name":"libsoup2.4-common","binary_version":"2.74.2-3ubuntu0.10"},{"binary_name":"libsoup2.4-tests","binary_version":"2.74.2-3ubuntu0.10"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8975-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-12547"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-12548"},{"id":"CVE-2026-102555","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102556","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-102557"},{"id":"CVE-2026-102558","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-102559","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-102560","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-103399","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"libsoup3","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/libsoup3?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-0ubuntu1+esm10"}]}],"versions":["3.0.4-2","3.0.4-3","3.0.5-1","3.0.7-0ubuntu1","3.0.7-0ubuntu1+esm1","3.0.7-0ubuntu1+esm2","3.0.7-0ubuntu1+esm3","3.0.7-0ubuntu1+esm4","3.0.7-0ubuntu1+esm5","3.0.7-0ubuntu1+esm6","3.0.7-0ubuntu1+esm7","3.0.7-0ubuntu1+esm8","3.0.7-0ubuntu1+esm9"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-soup-3.0","binary_version":"3.0.7-0ubuntu1+esm10"},{"binary_version":"3.0.7-0ubuntu1+esm10","binary_name":"libsoup-3.0-0"},{"binary_version":"3.0.7-0ubuntu1+esm10","binary_name":"libsoup-3.0-common"},{"binary_version":"3.0.7-0ubuntu1+esm10","binary_name":"libsoup-3.0-tests"}],"availability":"Available with Ubuntu Pro: 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