CVE-2026-10536 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Curl	Curl

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Curl	Curl

References

Link	Providers
https://curl.se/docs/CVE-2026-10536.html
https://curl.se/docs/CVE-2026-10536.json
https://hackerone.com/reports/3751697

History

Fri, 03 Jul 2026 08:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Curl Curl curl
Vendors & Products		Curl Curl curl

Fri, 03 Jul 2026 06:45:00 +0000

Type	Values Removed	Values Added
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.
Title		HTTP/2 stream-dependency tree UAF
References		https://curl.se/docs/CVE-2026-10536.html https://curl.se/docs/CVE-2026-10536.json https://hackerone.com/reports/3751697

MITRE

Status: PUBLISHED

Assigner: curl

Published: 2026-07-03T06:11:15.378Z

Updated: 2026-07-03T06:11:15.378Z

Reserved: 2026-06-01T11:49:55.548Z

Link: CVE-2026-10536

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-03T08:15:06Z

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