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VulnerabilityPublished Updated

CVE-2026-6429: curl · Information Exposure

Affects curlSource GCVE Database

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 11 Nov 2026, 23:18 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.15.3
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
curl curlAffected
  • =7.14.0
  • =8.15.0
  • =8.17.0
Fixed in–

AI-suggested

Until a fix is available, users should avoid configurations that combine .netrc credential usage with automatic HTTP redirects or consider alternative authentication methods. Monitoring vendor channels for updates is recommended.

Description

CVE-2026-6429 is a vulnerability in the curl library where using a .netrc file for credentials combined with following HTTP redirects can cause the password for the initial host to be leaked to the redirected host under certain conditions. This exposure of sensitive information can occur without user interaction and affects specific curl versions.

References

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