Insufficiently Protected Credentials Affecting curl-doc package, versions <8.20.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.64% (46th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-CURLDOC-16732079
  • published18 May 2026
  • disclosed13 May 2026

Introduced: 13 May 2026

CVE-2026-6253  (opens in a new tab)
CWE-522  (opens in a new tab)

How to fix?

Upgrade Minimos:latest curl-doc to version 8.20.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl-doc package and not the curl-doc package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

curl might erroneously pass on credentials for a first proxy to a second proxy.

This can happen when the following conditions are true:

  1. curl is setup to use specific different proxies for different URL schemes
  2. the first proxy needs credentials
  3. the second proxy uses no credentials
  4. while using the first proxy (using say http://), curl is asked to follow a redirect to a URL using another scheme (say https://), accessed using a second, different, proxy

CVSS Base Scores

version 3.1