CVE-2026-3783

MediumCVSS 5.3/10Last modified Sep 15, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-522

Affected software

No affected versions have been published.

Timeline

Published: Mar 11, 2026
Last modified: Sep 15, 2026
NVD status: Modified

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