Vulnerability · NVD

CVE-2026-3783

CVE-2026-3783 : medium severity (CVSS 5.3). No tracked catalog app is linked to this CVE.

Severity (CVSS): 5.3
Exploitation: 0.5 %
Tracked apps: 0
Still exposed: 0

Published on 2026-03-11

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.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

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

EPSS 0.51% exploit very unlikely percentile 40.5%

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

iOS Fixed in 26.6 18.7.10
iPadOS Fixed in 26.6 18.7.10
macOS Fixed in 26.6 15.7.8 14.8.8

View on NVD ↗ Advisory · curl.se

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