{
  "threat_severity" : "Moderate",
  "public_date" : "2026-07-03T06:15:04Z",
  "bugzilla" : {
    "description" : "curl: curl: Cookie injection via malicious HTTP server using super cookies",
    "id" : "2496765",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2496765"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-565",
  "details" : [ "A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set\n'super cookies' that bypass the Public Suffix List check. This enables an\nattacker-controlled origin to inject cookies that curl subsequently scopes and\ntransmits to unrelated third-party domains.", "A flaw was found in curl's cookie parsing logic. A malicious HTTP server can exploit this by setting 'super cookies' that bypass the Public Suffix List check. This allows an attacker-controlled origin to inject cookies that curl then transmits to unrelated third-party domains, leading to compromising request integrity." ],
  "statement" : "Moderate: Red Hat rates this flaw Moderate (CVSS 6.5) compared to CISA's Critical (9.1). The scoring difference is due to two factors: first, exploitation requires the victim's curl to connect using a trailing-dot hostname (e.g., https://example.co.uk.), a format that is uncommon in practice and incompatible with TLS SNI; second, the direct impact is cookie injection into outbound requests — not exfiltration of victim data to the attacker. The curl project itself rates this flaw Low severity. Red Hat products that use curl for HTTP communication are affected, but the trailing-dot precondition significantly limits real-world exploitability. This flaw has not been shown to enable impacts beyond session integrity modification.",
  "affected_release" : [ {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-06-24T00:00:00Z",
    "advisory" : "RHSA-2026:29017",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "curl-main-8.21.0-0.1.hum1"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-07-02T00:00:00Z",
    "advisory" : "RHSA-2026:34975",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "rust-main-1.96.1-1.hum1"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "curl",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Fix deferred",
    "package_name" : "curl",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "curl",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "curl",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "curl",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "rhcos",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces",
    "fix_state" : "Fix deferred",
    "package_name" : "devspaces/code-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3"
  }, {
    "product_name" : "Red Hat Trusted Profile Analyzer",
    "fix_state" : "Fix deferred",
    "package_name" : "rhtpa/rhtpa-trustification-service-rhel9",
    "cpe" : "cpe:/a:redhat:trusted_profile_analyzer:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-8924\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-8924\nhttps://curl.se/docs/CVE-2026-8924.html\nhttps://curl.se/docs/CVE-2026-8924.json\nhttps://hackerone.com/reports/3733905" ],
  "name" : "CVE-2026-8924",
  "mitigation" : {
    "value" : "Do not use trailing-dot hostnames in URLs passed to curl. Trailing dots are uncommon and incompatible with TLS SNI. Upgrade to curl 8.21.0 to resolve",
    "lang" : "en:us"
  },
  "csaw" : false
}