CVE-2022-27780: Haxx Curl

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.

Affected products

• Haxx Curl: from 7.80.0, before 7.83.1 (fixed in 7.83.1)
• Netapp Clustered Data Ontap: affected versions not specified
• Netapp h300s Firmware: affected versions not specified
• Netapp h410s Firmware: affected versions not specified
• Netapp h500s Firmware: affected versions not specified
• Netapp h700s Firmware: affected versions not specified
• Netapp Hci Bootstrap OS: affected versions not specified
• Netapp Solidfire, Enterprise Sds & Hci Storage Node: affected versions not specified
• Netapp Solidfire & Hci Management Node: affected versions not specified
• Splunk Universal Forwarder: from 8.2.0, before 8.2.12 (fixed in 8.2.12); from 9.0.0, before 9.0.6 (fixed in 9.0.6); version 9.1.0 only

Published 2022-06-02. Last modified 2026-06-17.