Authentication Bypass by Primary Weakness Affecting curl-debuginfo package, versions <0:8.21.0-5.amzn2023.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.37% (31st percentile)

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  • Snyk IDSNYK-AMZN2023-CURLDEBUGINFO-19816742
  • published15 Sept 2026
  • disclosed3 Jul 2026

Introduced: 3 Jul 2026

CVE-2026-8458  (opens in a new tab)
CWE-305  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 curl-debuginfo to version 0:8.21.0-5.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-2132.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl-debuginfo package and not the curl-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services".

libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead.

When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.

CVSS Base Scores

version 3.1