{
  "schema_version": "1.5.0",
  "id": "CURL-CVE-2026-10536",
  "aliases": [
    "CVE-2026-10536"
  ],
  "summary": "HTTP/2 stream-dependency tree UAF",
  "modified": "2026-06-24T15:14:27.00Z",
  "database_specific": {
    "package": "curl",
    "affects": "lib",
    "URL": "https://curl.se/docs/CVE-2026-10536.json",
    "www": "https://curl.se/docs/CVE-2026-10536.html",
    "issue": "https://hackerone.com/reports/3751697",
    "CWE": {
      "id": "CWE-416",
      "desc": "Use After Free"
    },
    "last_affected": "8.20.0",
    "severity": "Low"
  },
  "published": "2026-06-24T08:00:00.00Z",
  "affected": [
    {
      "ranges": [
        {
           "type": "SEMVER",
           "events": [
             {"introduced": "7.88.0"},
             {"fixed": "8.21.0"}
           ]
        },
        {
           "type": "GIT",
           "repo": "https://github.com/curl/curl.git",
           "events": [
             {"introduced": "71b7e0161032927cdfb4e75ea40f65b8898b3956"},
             {"fixed": "bfbff7852f050232edd3e5ca5c6bf2021c340f5a"}
           ]
        }
      ],
      "versions": [
        "8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", 
        "8.14.0", "8.13.0", "8.12.1", "8.12.0", "8.11.1", "8.11.0", "8.10.1", 
        "8.10.0", "8.9.1", "8.9.0", "8.8.0", "8.7.1", "8.7.0", "8.6.0", 
        "8.5.0", "8.4.0", "8.3.0", "8.2.1", "8.2.0", "8.1.2", "8.1.1", 
        "8.1.0", "8.0.1", "8.0.0", "7.88.1", "7.88.0"
      ]
    }
  ],
  "credits": [
    {
      "name": "Joshua Rogers (Aisle Research)",
      "type": "FINDER"
    },
    {
      "name": "Stefan Eissing",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "details": "A use-after-free vulnerability exists in libcurl when an application\nconfigures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or\n`CURLOPT_STREAM_DEPENDS_E`, subsequently invokes `curl_easy_reset()`, and\nfinally terminates the handle with `curl_easy_cleanup()`. During this final\ncleanup phase, libcurl attempts to access and modify an internal structure\nthat was already freed during the reset operation."
}