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Affected Component
Analysis
libcurl-gnutls
Exploitable
Name
CVE-2026-3783
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
5.3
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
curl (yocto:kirkstone)
#
Title
Author
Resolve
1
http: move Curl_allow_auth_to_host()
Daniel Stenberg <daniel@haxx.se>
CVE-2026-3783
2
http: only send bearer if auth is allowed
Daniel Stenberg <daniel@haxx.se>
CVE-2026-3783
curl (yocto:scarthgap)
#
Title
Author
Resolve
1
http: only send bearer if auth is allowed
Daniel Stenberg <daniel@haxx.se>
CVE-2026-3783