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CVE-2026-6429

πŸ”Ά medium
πŸ” Scan for this CVE
Summary

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
EPSS Score
0.5
Exploit Probability
Published Date
2026-05-13
First Seen: 2026-05-17
πŸ“Š Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.0% of all 365,312 vulnerabilities in our database.

#296,040
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 13, 2026
πŸ” Exploitation Status
None
No known exploits
βš™οΈ Automatable
NO
Requires human interaction
πŸ’₯ Technical Impact
Partial
Limited system impact
πŸ† Discovered By
Muhamad Arga Reksapati Daniel Stenberg (remediation developer)
SSVC data provided by CISA
Last Modified 2026-09-15
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE IDs (Weakness Types)

πŸ“¦ Affected Products 1

πŸ”— References 3

https://hackerone.com/reports/3677759
Exploit Issue Tracking Third Party Advisory

πŸ”— Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-13608 ⚠️ high 7.4 0.6 A flaw in the libcurl SASL negotiation for LDAP authentication allows an incomplete handshake sequence to be misinterpre... 2026-09-06
CVE-2026-18924 β›” critical 9.1 0.9 A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with othe... 2026-09-06
CVE-2026-19931 β›” critical 9.8 1.2 A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, w... 2026-09-06
CVE-2026-80229 ⚠️ high 7.5 0.9 When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy han... 2026-09-06
CVE-2026-80230 ⚠️ high 7.5 0.6 When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer verification (`CURLOPT_SSL_VER... 2026-09-06
CVE-2026-80231 ⚠️ high 7.5 0.9 A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when using a diffe... 2026-09-06
These CVEs affect the same products