Authentication Bypass Affecting libcurl4 package, versions <8.14.1-150400.5.86.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.5% (41st percentile)

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  • Snyk IDSNYK-SLES155-LIBCURL4-17991036
  • published16 Jul 2026
  • disclosed15 Jul 2026

Introduced: 15 Jul 2026

CVE-2026-8927  (opens in a new tab)
CWE-294  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 libcurl4 to version 8.14.1-150400.5.86.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl4 package and not the libcurl4 package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed through proxyB erroneously leaks the Proxy-Authorization: header intended solely for proxyA.

CVSS Base Scores

version 3.1