Riskcovery

CVE-2026-10536

HTTP/2 stream-dependency tree UAF

State
Published
Severity
9.8 Critical
Published
Jul 3, 2026
Updated
Sep 15, 2026
Reserved
Jun 1, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
curlcurl
  • 7.88.0 to before 8.14.2Affected
  • 8.15.0 to before 8.16.1Affected
  • 8.17.0 to before 8.20.1Affected
curlcurl
  • 71b7e0161032927cdfb4e75ea40f65b8898b3956 to before bfbff7852f050232edd3e5ca5c6bf2021c340f5aAffected
curlcurl
  • 8.20.0Affected
  • 8.19.0Affected
  • 8.18.0Affected
  • 8.17.0Affected
  • 8.16.0Affected
  • 8.15.0Affected
  • 8.14.1Affected
  • 8.14.0Affected
  • 8.13.0Affected
  • 8.12.1Affected
  • 8.12.0Affected
  • 8.11.1Affected
  • 8.11.0Affected
  • 8.10.1Affected
  • 8.10.0Affected
  • 8.9.1Affected
  • 8.9.0Affected
  • 8.8.0Affected
  • 8.7.1Affected
  • 8.7.0Affected
  • 8.6.0Affected
  • 8.5.0Affected
  • 8.4.0Affected
  • 8.3.0Affected
  • 8.2.1Affected
  • and 8 more versions

References

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