Vulnerability Report

CVE-2026-6429

Title: netrc password leakage during HTTP redirects in libcurl

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2026-6429.

CWE Category NVD-CWE-noinfo

Published Date May 13, 2026

Modified Date May 14, 2026

Exploit Status Not Found

Score 5.3 CVSS v3.1

Exploit Probability (EPSS)

0.02%

Vulnerability Summary

CVE-2026-6429: 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.

Impacted Vendors

haxx 1

daniel_stenberg 1

Reference Links

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

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity MEDIUM

5.3

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-6429 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 14, 2026 MODIFIED

Vulnerability data updated via NVD.

May 13, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.