CVEvulnerability
CVE-2026-10536
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-07-03
- Last modified
- 2026-09-15
- Assigner
- 2499f714-1537-4658-8207-48ae4bb9eae9
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
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.
Affected configurations
• haxx curl (>= 7.88.0 < 8.21.0)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://curl.se/docs/CVE-2026-10536.html Patch, Vendor Advisory
- https://curl.se/docs/CVE-2026-10536.json Vendor Advisory
- https://hackerone.com/reports/3751697 Exploit, Issue Tracking, Third Party Advisory
- https://hackerone.com/reports/3751697 Exploit, Issue Tracking, Third Party Advisory