{"id":"CVE-2026-10536","aliases":["CURL-CVE-2026-10536"],"url":"https://o3.security/vulnerability/CVE-2026-10536","summary":"HTTP/2 stream-dependency tree UAF","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.","published":"2026-07-03T06:11:15.378Z","modified":"2026-08-12T03:51:43.640934686Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00507,"percentile":0.41233,"asOf":"2026-08-20"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://curl.se/docs/CVE-2026-10536.html"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-10536.json"},{"type":"WEB","url":"https://hackerone.com/reports/3751697"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10536.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10536"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:43.640934686Z"}}