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CVE-20XX-?

CVE-2026-6429

5.3 MEDIUM 0.5% exploit odds Fix listed Disclosure

What it is

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.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of data exposure.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-05-13 13:01 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-15 07:16 UTC Last updatedMost recent change to the record

Details

Published: 2026-05-13 13:01 UTC
Last modified: 2026-09-15 07:16 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-200 · Information exposure
Record status: Modified

Affected

Haxx Curl < 8.20.0

Attack profile CVSS 3.1 · 5.3

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Raw vector

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

Meme: I wake up, CVE-2026-6429

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Fix and advisories

https://curl.se/docs/CVE-2026-6429.html

References

NVD record · CVE.org record