{"id":"CVE-2026-96238","title":"Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.","summary":"Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","cwe":["CWE-346","CWE-427"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T20:19:15.233","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-96238","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96238","label":"secure@microsoft.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96238.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-96238"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548809"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-96238"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96238"},{"url":"https://access.redhat.com/errata/RHSA-2026:86195"},{"url":"https://access.redhat.com/errata/RHSA-2026:86168"},{"url":"https://access.redhat.com/errata/RHSA-2026:86172"},{"url":"https://access.redhat.com/errata/RHSA-2026:86192"},{"url":"https://access.redhat.com/errata/RHSA-2026:86594"},{"url":"https://access.redhat.com/errata/RHSA-2026:86170"},{"url":"https://access.redhat.com/errata/RHSA-2026:86193"},{"url":"https://access.redhat.com/errata/RHSA-2026:86169"},{"url":"https://access.redhat.com/errata/RHSA-2026:86171"},{"url":"https://access.redhat.com/errata/RHSA-2026:84491"},{"url":"https://access.redhat.com/errata/RHSA-2026:84693"},{"url":"https://access.redhat.com/errata/RHSA-2026:84424"},{"url":"https://access.redhat.com/errata/RHSA-2026:88474"},{"url":"https://access.redhat.com/errata/RHSA-2026:88424"},{"url":"https://access.redhat.com/errata/RHSA-2026:88425"},{"url":"https://access.redhat.com/errata/RHSA-2026:88422"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-13T19:43:29.255Z","vendor":"Microsoft","product":".NET 10.0","affected":[".net_10.0 >= 10.0.0 < 10.0.113",".net_11.0 >= 11.0.0 < 11.0.100-rc.2",".net_8.0 >= 8.0.0 < 8.0.426",".net_9.0 >= 9.0.0 < 9.0.122","visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.42","visual_studio_2026_version_18.10 >= 18.10.0 < 18.10.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T19:46:15.523484Z"},"epss":0.00296,"epssPercentile":0.2216,"patched":["enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_v_9","enterprise_linux_codeready_linux_builder_v_10","enterprise_linux_crb_v_8","enterprise_linux_codeready_linux_builder_v_9","hardened_images"],"slug":"CVE-2026-96238","body":"## Overview\n\nOrigin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:86195** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86195)\n- **RHSA-2026:86168** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86168)\n- **RHSA-2026:86172** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86172)\n- **RHSA-2026:86192** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86192)\n- **RHSA-2026:86594** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:86594)\n- **RHSA-2026:86170** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86170)\n- **RHSA-2026:86193** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86193)\n- **RHSA-2026:86169** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86169)\n- **RHSA-2026:86171** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86171)\n- **RHSA-2026:84491** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:84491)\n- **RHSA-2026:84693** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84693)\n- **RHSA-2026:88474** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88474)\n- **RHSA-2026:88424** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88424)\n- **RHSA-2026:88425** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88425)\n- **RHSA-2026:88422** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88422)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}