{
  "threat_severity" : "Moderate",
  "public_date" : "2026-05-05T13:10:05Z",
  "bugzilla" : {
    "description" : "httpd: mod_md: unrestricted OCSP response leads to resource exhaustion",
    "id" : "2466753",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2466753"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-770",
  "details" : [ "Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.\nThis issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.\nUsers are recommended to upgrade to version 2.4.67, which fixes the issue.", "A flaw was found in the mod_md module of httpd. When processing OCSP (Online Certificate Status Protocol) responses from a malicious or compromised OCSP responder, the module fails to enforce proper size limits on the incoming data. This issue leads to memory exhaustion and a denial of service." ],
  "statement" : "To exploit this flaw, the Apache HTTP Server must query an untrusted or compromised OCSP responder, limiting its exposure. Due to this reason, this vulnerability has been rated with a moderate severity.\nThis flaw only affects configurations with mod_md loaded and being used. This module can be disabled via the configuration file if its functionality is not being used.",
  "affected_release" : [ {
    "product_name" : "JBoss Core Services for RHEL 8",
    "release_date" : "2026-06-22T00:00:00Z",
    "advisory" : "RHSA-2026:27200",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1::el8",
    "package" : "jbcs-httpd24-httpd-0:2.4.62-13.el8jbcs"
  }, {
    "product_name" : "JBoss Core Services for RHEL 8",
    "release_date" : "2026-06-22T00:00:00Z",
    "advisory" : "RHSA-2026:27200",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1::el8",
    "package" : "jbcs-httpd24-mod_md-1:2.4.28-16.el8jbcs"
  }, {
    "product_name" : "JBoss Core Services on RHEL 7",
    "release_date" : "2026-06-22T00:00:00Z",
    "advisory" : "RHSA-2026:27200",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1::el7",
    "package" : "jbcs-httpd24-httpd-0:2.4.62-13.el7jbcs"
  }, {
    "product_name" : "JBoss Core Services on RHEL 7",
    "release_date" : "2026-06-22T00:00:00Z",
    "advisory" : "RHSA-2026:27200",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1::el7",
    "package" : "jbcs-httpd24-mod_md-1:2.4.28-16.el7jbcs"
  }, {
    "product_name" : "Red Hat JBoss Core Services 2.4.62.SP4",
    "release_date" : "2026-06-22T00:00:00Z",
    "advisory" : "RHSA-2026:27201",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1",
    "package" : "jbcs-httpd24-mod_md"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "mod_md",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "httpd:2.4/mod_md",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "mod_md",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "mod_md",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-29168\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-29168\nhttps://httpd.apache.org/security/vulnerabilities_24.html" ],
  "name" : "CVE-2026-29168",
  "mitigation" : {
    "value" : "Disabling mod_md and restarting httpd will mitigate this flaw.",
    "lang" : "en:us"
  },
  "csaw" : false
}