CVE-2026-3783 Affecting libcurl4 package, versions <8.14.1-150400.5.80.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-SLES154-LIBCURL4-15724006
  • published21 Mar 2026
  • disclosed17 Mar 2026

Introduced: 17 Mar 2026

NewCVE-2026-3783  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 libcurl4 to version 8.14.1-150400.5.80.1 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:15.4 relevant fixed versions and status.

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances.

If the hostname that the first request is redirected to has information in the used .netrc file, with either of the machine or default keywords, curl would pass on the bearer token set for the first host also to the second one.

CVSS Base Scores

version 3.1