{
  "threat_severity" : "Important",
  "public_date" : "2026-04-29T00:00:00Z",
  "bugzilla" : {
    "description" : "gnutls: gnutls: Authentication Bypass via NUL Character in Username",
    "id" : "2467289",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2467289"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-170",
  "details" : [ "A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.", "A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process." ],
  "acknowledgement" : "Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-05-26T00:00:00Z",
    "advisory" : "RHSA-2026:20613",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "gnutls-0:3.8.10-4.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10.0 Extended Update Support",
    "release_date" : "2026-06-16T00:00:00Z",
    "advisory" : "RHSA-2026:26409",
    "cpe" : "cpe:/o:redhat:enterprise_linux_eus:10.0",
    "package" : "gnutls-0:3.8.9-9.el10_0.19"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-05-26T00:00:00Z",
    "advisory" : "RHSA-2026:20611",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "gnutls-0:3.6.16-8.el8_10.6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-05-26T00:00:00Z",
    "advisory" : "RHSA-2026:20611",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "gnutls-0:3.6.16-8.el8_10.6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:33125",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.4",
    "package" : "gnutls-0:3.6.14-10.el8_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:33125",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.4",
    "package" : "libtasn1-0:4.13-3.el8_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:33125",
    "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.4",
    "package" : "gnutls-0:3.6.14-10.el8_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:33125",
    "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.4",
    "package" : "libtasn1-0:4.13-3.el8_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30849",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.6",
    "package" : "gnutls-0:3.6.16-5.el8_6.5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30849",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.6",
    "package" : "libtasn1-0:4.13-3.el8_6.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30849",
    "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.6",
    "package" : "gnutls-0:3.6.16-5.el8_6.5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30849",
    "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.6",
    "package" : "libtasn1-0:4.13-3.el8_6.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30850",
    "cpe" : "cpe:/a:redhat:rhel_tus:8.8",
    "package" : "gnutls-0:3.6.16-7.el8_8.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30850",
    "cpe" : "cpe:/a:redhat:rhel_tus:8.8",
    "package" : "libtasn1-0:4.13-4.el8_8.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30850",
    "cpe" : "cpe:/a:redhat:rhel_e4s:8.8",
    "package" : "gnutls-0:3.6.16-7.el8_8.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:30850",
    "cpe" : "cpe:/a:redhat:rhel_e4s:8.8",
    "package" : "libtasn1-0:4.13-4.el8_8.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-05-26T00:00:00Z",
    "advisory" : "RHSA-2026:20612",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "gnutls-0:3.8.10-4.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-05-26T00:00:00Z",
    "advisory" : "RHSA-2026:20612",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "gnutls-0:3.8.10-4.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "release_date" : "2026-07-20T00:00:00Z",
    "advisory" : "RHSA-2026:41921",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.2",
    "package" : "gnutls-0:3.7.6-21.el9_2.7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "release_date" : "2026-06-29T00:00:00Z",
    "advisory" : "RHSA-2026:32962",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.4",
    "package" : "gnutls-0:3.8.3-4.el9_4.6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "release_date" : "2026-06-25T00:00:00Z",
    "advisory" : "RHSA-2026:30004",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.6",
    "package" : "gnutls-0:3.8.3-6.el9_6.4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.20",
    "release_date" : "2026-07-07T00:00:00Z",
    "advisory" : "RHSA-2026:34788",
    "cpe" : "cpe:/a:redhat:openshift:4.20::el9",
    "package" : "rhcos-4.20.9.6.202607010620-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.21",
    "release_date" : "2026-07-07T00:00:00Z",
    "advisory" : "RHSA-2026:34764",
    "cpe" : "cpe:/a:redhat:openshift:4.21::el9",
    "package" : "rhcos-4.21.9.6.202607011303-0"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.22",
    "release_date" : "2026-07-07T00:00:00Z",
    "advisory" : "RHSA-2026:34790",
    "cpe" : "cpe:/a:redhat:openshift:4.22::el9",
    "package" : "rhcos-4.22.9.8.202606301732-0"
  }, {
    "product_name" : "Red Hat AI Inference Server 3.2",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:36004",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3.2::el9",
    "package" : "rhaiis/model-opt-cuda-rhel9:1782951051"
  }, {
    "product_name" : "Red Hat AI Inference Server 3.2",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:36005",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3.2::el9",
    "package" : "rhaiis/vllm-cuda-rhel9:1782951012"
  }, {
    "product_name" : "Red Hat AI Inference Server 3.2",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:36006",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3.2::el9",
    "package" : "rhaiis/vllm-rocm-rhel9:1782951244"
  }, {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-06-24T00:00:00Z",
    "advisory" : "RHSA-2026:29197",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-server-rhel9:1782159791"
  }, {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-06-24T00:00:00Z",
    "advisory" : "RHSA-2026:29197",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-ui-rhel9:1782166952"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-05-02T00:00:00Z",
    "advisory" : "RHSA-2026:13274",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "gnutls-main-3.8.13-1.hum1",
    "impact" : "important"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-06-16T00:00:00Z",
    "advisory" : "RHSA-2026:26319",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/cds-rhel9:1781525684"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-06-16T00:00:00Z",
    "advisory" : "RHSA-2026:26319",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/haproxy-rhel9:1781525671"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-06-16T00:00:00Z",
    "advisory" : "RHSA-2026:26319",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/installer-rhel9:1781525693"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-06-16T00:00:00Z",
    "advisory" : "RHSA-2026:26319",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/rhua-rhel9:1781525739"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "gnutls",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "gnutls",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "rhcos",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-42010\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-42010\nhttps://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-4" ],
  "name" : "CVE-2026-42010",
  "csaw" : false
}