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ALPINE-CVE-2026-6253

ALPINE-CVE-2026-6253

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 5.9 · Medium · Fix available

Published
Updated

Stack: system

Affected products and versions

  • curl Alpine:v3.21

    Affected ranges
    • ECOSYSTEM: ≥ 7.14.1, < 8.14.1-r3

    Update to 8.14.1-r3

  • curl Alpine:v3.22

    Affected ranges
    • ECOSYSTEM: ≥ 7.14.1, < 8.14.1-r4

    Update to 8.14.1-r4

  • curl Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: ≥ 7.14.1, < 8.20.0-r0

    Update to 8.20.0-r0

  • curl Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: ≥ 7.14.1, < 8.20.0-r0

    Update to 8.20.0-r0

Original sources

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