CVE-2026-6429

5.3 mediumEPSS 0.5%

Medium (5.3) in haxx curl. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2026-05-13
Modified: 2026-09-15
Record from: the NVD, synced 2026-10-19

Affected

haxx:curl

References

https://curl.se/docs/CVE-2026-6429.html
https://curl.se/docs/CVE-2026-6429.json
https://hackerone.com/reports/3677759

Check your stack JSON