{"id":"CVE-2025-46421","title":"A flaw was found in libsoup","summary":"A flaw was found in libsoup. When libsoup clients encounter an HTTP redirect, they mistakenly send the HTTP Authorization header to the new host that the redirection points to. This allows the new host to impersonate the user to the orig…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-497"],"published":"2025-04-24","updated":"2026-06-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-46421","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:4439","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4440","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4508","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4538","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4560","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4568","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4609","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4624","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:7436","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:7505","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2025-46421","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2361962","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/libsoup/-/issues/439","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-46421.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-46421"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46421"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.00583,"epssPercentile":0.47684,"ingestedAt":"2026-06-29T13:24:34.200Z","vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream E4S (v.9.0)","affected":["enterprise_linux 6","enterprise_linux 7","enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_aus_v_8_2","enterprise_linux_appstream_aus_v_8_4","enterprise_linux_appstream_e4s_v_8_4","enterprise_linux_appstream_tus_v_8_4","enterprise_linux_appstream_aus_v_8_6","enterprise_linux_appstream_e4s_v_8_6","enterprise_linux_appstream_tus_v_8_6","enterprise_linux_appstream_eus_v_8_8","enterprise_linux_appstream_e4s_v_9_0","enterprise_linux_appstream_eus_v_9_2","enterprise_linux_appstream_eus_v_9_4","enterprise_linux_appstream_v_9","enterprise_linux_baseos_v_8","enterprise_linux_baseos_aus_v_8_2","enterprise_linux_baseos_aus_v_8_4","enterprise_linux_baseos_e4s_v_8_4","enterprise_linux_baseos_tus_v_8_4","enterprise_linux_baseos_aus_v_8_6","enterprise_linux_baseos_e4s_v_8_6","enterprise_linux_baseos_tus_v_8_6","enterprise_linux_baseos_eus_v_8_8","enterprise_linux_codeready_linux_builder_v_10"],"patched":["enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_aus_v_8_2","enterprise_linux_appstream_aus_v_8_4","enterprise_linux_appstream_e4s_v_8_4","enterprise_linux_appstream_tus_v_8_4","enterprise_linux_appstream_aus_v_8_6","enterprise_linux_appstream_e4s_v_8_6","enterprise_linux_appstream_tus_v_8_6","enterprise_linux_appstream_eus_v_8_8","enterprise_linux_appstream_e4s_v_9_0","enterprise_linux_appstream_eus_v_9_2","enterprise_linux_appstream_eus_v_9_4","enterprise_linux_appstream_v_9","enterprise_linux_baseos_v_8","enterprise_linux_baseos_aus_v_8_2","enterprise_linux_baseos_aus_v_8_4","enterprise_linux_baseos_e4s_v_8_4","enterprise_linux_baseos_tus_v_8_4","enterprise_linux_baseos_aus_v_8_6","enterprise_linux_baseos_e4s_v_8_6","enterprise_linux_baseos_tus_v_8_6","enterprise_linux_baseos_eus_v_8_8","enterprise_linux_codeready_linux_builder_v_10"],"slug":"CVE-2025-46421","body":"## Overview\n\nA flaw was found in libsoup. When libsoup clients encounter an HTTP redirect, they mistakenly send the HTTP Authorization header to the new host that the redirection points to. This allows the new host to impersonate the user to the original host that issued the redirect.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2025:7505** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2025-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2025:7505)\n- **RHSA-2025:4560** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8) · released 2025-05-06 · [advisory](https://access.redhat.com/errata/RHSA-2025:4560)\n- **RHSA-2025:4538** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v. 8.2), Red Hat Enterprise Linux BaseOS AUS (v. 8.2) · released 2025-05-06 · [advisory](https://access.redhat.com/errata/RHSA-2025:4538)\n- **RHSA-2025:4609** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream E4S (v.8.4), Red Hat Enterprise Linux AppStream TUS (v.8.4), Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS E4S (v.8.4), Red Hat Enterprise Linux BaseOS TUS (v.8.4) · released 2025-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2025:4609)\n- **RHSA-2025:4624** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6), Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS E4S (v.8.6), Red Hat Enterprise Linux BaseOS TUS (v.8.6) · released 2025-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2025:4624)\n- **RHSA-2025:4568** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.8.8), Red Hat Enterprise Linux BaseOS EUS (v.8.8) · released 2025-05-06 · [advisory](https://access.redhat.com/errata/RHSA-2025:4568)\n- **RHSA-2025:4439** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.0) · released 2025-05-05 · [advisory](https://access.redhat.com/errata/RHSA-2025:4439)\n- **RHSA-2025:4508** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.2) · released 2025-05-06 · [advisory](https://access.redhat.com/errata/RHSA-2025:4508)\n- **RHSA-2025:4440** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.4) · released 2025-05-05 · [advisory](https://access.redhat.com/errata/RHSA-2025:4440)\n- **RHSA-2025:7436** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2025-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2025:7436)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-46421.json)","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":37.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}