CVE-2015-3236: Haxx Curl

Medium severity, CVSS 5.0. EPSS: 7.2% chance of exploitation in the next 30 days.

cURL and libcurl 7.40.0 through 7.42.1 send the HTTP Basic authentication credentials for a previous connection when reusing a reset (curl_easy_reset) connection handle to send a request to the same host name, which allows remote attackers to obtain sensitive information via unspecified vectors.

Affected products

• Haxx Curl: version 7.40.0 only; version 7.41.0 only; version 7.42.0 only; version 7.42.1 only
• Haxx Libcurl: version 7.40.0 only; version 7.41.0 only; version 7.42.0 only; version 7.42.1 only

Published 2015-06-22. Last modified 2026-06-17.