CVE-2026-10536 Affecting curl package, versions <8.5.0-2ubuntu10.11


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.51% (41st percentile)

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  • Snyk IDSNYK-UBUNTU2404-CURL-17486834
  • published25 Jun 2026
  • disclosed3 Jul 2026

Introduced: 25 Jun 2026

CVE-2026-10536  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.04 curl to version 8.5.0-2ubuntu10.11 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1