{"id":"CVE-2026-3634","aliases":["AZL-80226","DEBIAN-CVE-2026-3634","EUVD-2026-12561","GHSA-jx6g-363c-pprr","UBUNTU-CVE-2026-3634"],"status":"published","title":"Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","severity":{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00195,"percentile":0.0933,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-93"],"published":"2026-03-17T09:44:19Z","modified":"2026-11-10T02:50:37Z","affected":[{"source":"osv","ecosystem":"Azure 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hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"redhat","product":"enterprise_linux"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-3634","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2445129","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory"]},{"url":"https://gitlab.gnome.org/GNOME/libsoup/-/issues/485","tags":["exploit","Exploit","Issue Tracking","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3634","tags":["web"]},{"url":"https://github.com/advisories/GHSA-jx6g-363c-pprr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-3634","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-3634","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3634","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-3634","title":"Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T09:44:19.631Z","modified":"2026-11-05T20:24:11.36Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-93"],"updated_at":"2026-11-05T21:25:06.152449Z"}],"euvd":[{"id":"EUVD-2026-12561","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T09:44:19Z","modified":"2026-11-05T20:24:11Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low"}],"updated_at":"2026-11-05T21:01:57.572849Z"}],"ghsa":[{"id":"GHSA-jx6g-363c-pprr","title":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type...","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T12:30:19Z","modified":"2026-03-17T12:30:20Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T15:06:40.510126Z"}],"nvd":[{"id":"CVE-2026-3634","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T10:16:00.86Z","modified":"2026-11-05T21:18:48.11Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-93"],"updated_at":"2026-11-05T23:57:16.793383Z"}],"osv":[{"id":"DEBIAN-CVE-2026-3634","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T10:16:00.86Z","modified":"2026-10-31T16:04:23.152296165Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"UBUNTU-CVE-2026-3634","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T10:16:00Z","modified":"2026-11-10T02:50:37.197715407Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L","level":"low"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-10T03:19:13.406012Z"},{"id":"AZL-80226","title":"CVE-2026-3634 affecting package libsoup 3.4.4-18","description":"A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.","status":"published","published":"2026-03-17T10:16:00Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:24.800038Z"}]}}