Vulnerability Description
When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, libcurl could leak the password used for the first host to the followed-to host under certain circumstances.
CVSS Score
5.3
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.14.0, < 8.20.0 |
References
- https://curl.se/docs/CVE-2026-6429.htmlPatchVendor Advisory
- https://curl.se/docs/CVE-2026-6429.jsonProduct
- https://hackerone.com/reports/3677759ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2026-6429?
CVE-2026-6429 is a vulnerability with a CVSS score of 5.3 (MEDIUM). When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, libcurl could leak the password used for the first host to the followed-to host under certain circumstances.
How severe is CVE-2026-6429?
CVE-2026-6429 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-6429?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.