VULNERABILITY INTELLIGENCE

CVE-2026-10536

CVSS score9.8 CRITICAL
EPSS probability0.60%
CISA KEVNot currently listed
Published2026-07-03
Last modified2026-09-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURLOPT_STREAM_DEPENDS_E`, subsequently invokes `curl_easy_reset()`, and finally terminates the handle with `curl_easy_cleanup()`. During this final cleanup phase, libcurl attempts to access and modify an internal structure that was already freed during the reset operation.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-416
  • nvd@nist.gov: CWE-416

Primary references