CVE-2026-7168
Medium
Description
Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Proxy-Authorization:` header field meant for `proxyA`, to `proxyB`.
SeverityMedium
CVSS5.3
Exploit probability—
ProductHaxx Curl
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-294CWE-294
How to fix
Update
- haxx curl8.20.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx curl | 7.12.0 ≤ v < 8.20.0 | 8.20.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.