CVE-2026-3783 Affecting libcurl-minimal package, versions <0:7.76.1-40.el9_8.5


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-ORACLE9-LIBCURLMINIMAL-18966398
  • published19 Aug 2026
  • disclosed11 Mar 2026

Introduced: 11 Mar 2026

CVE-2026-3783  (opens in a new tab)

How to fix?

Upgrade Oracle:9 libcurl-minimal to version 0:7.76.1-40.el9_8.5 or higher.
This issue was patched in ELSA-2026-55439.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-minimal package and not the libcurl-minimal package as distributed by Oracle. See How to fix? for Oracle:9 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