CVE-2026-3783

EUVD-2026-11138
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
curlCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
Affected Products (NVD)
VendorProductVersion
haxxcurl
7.33.0 ≤
𝑥
< 8.19.0
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
curlcurl
𝑥
≤ 8.18.0
CNA
curlcurl
𝑥
≤ 8.17.0
CNA
curlcurl
𝑥
≤ 8.16.0
CNA
curlcurl
𝑥
≤ 8.15.0
CNA
curlcurl
𝑥
≤ 8.14.1
CNA
curlcurl
𝑥
≤ 8.14.0
CNA
curlcurl
𝑥
≤ 8.13.0
CNA
curlcurl
𝑥
≤ 8.12.1
CNA
curlcurl
𝑥
≤ 8.12.0
CNA
curlcurl
𝑥
≤ 8.11.1
CNA
curlcurl
𝑥
≤ 8.11.0
CNA
curlcurl
𝑥
≤ 8.10.1
CNA
curlcurl
𝑥
≤ 8.10.0
CNA
curlcurl
𝑥
≤ 8.9.1
CNA
curlcurl
𝑥
≤ 8.9.0
CNA
curlcurl
𝑥
≤ 8.8.0
CNA
curlcurl
𝑥
≤ 8.7.1
CNA
curlcurl
𝑥
≤ 8.7.0
CNA
curlcurl
𝑥
≤ 8.6.0
CNA
curlcurl
𝑥
≤ 8.5.0
CNA
curlcurl
𝑥
≤ 8.4.0
CNA
curlcurl
𝑥
≤ 8.3.0
CNA
curlcurl
𝑥
≤ 8.2.1
CNA
curlcurl
𝑥
≤ 8.2.0
CNA
curlcurl
𝑥
≤ 8.1.2
CNA
curlcurl
𝑥
≤ 8.1.1
CNA
curlcurl
𝑥
≤ 8.1.0
CNA
curlcurl
𝑥
≤ 8.0.1
CNA
curlcurl
𝑥
≤ 8.0.0
CNA
curlcurl
𝑥
≤ 7.88.1
CNA
curlcurl
𝑥
≤ 7.88.0
CNA
curlcurl
𝑥
≤ 7.87.0
CNA
curlcurl
𝑥
≤ 7.86.0
CNA
curlcurl
𝑥
≤ 7.85.0
CNA
curlcurl
𝑥
≤ 7.84.0
CNA
curlcurl
𝑥
≤ 7.83.1
CNA
curlcurl
𝑥
≤ 7.83.0
CNA
curlcurl
𝑥
≤ 7.82.0
CNA
curlcurl
𝑥
≤ 7.81.0
CNA
curlcurl
𝑥
≤ 7.80.0
CNA
curlcurl
𝑥
≤ 7.79.1
CNA
curlcurl
𝑥
≤ 7.79.0
CNA
curlcurl
𝑥
≤ 7.78.0
CNA
curlcurl
𝑥
≤ 7.77.0
CNA
curlcurl
𝑥
≤ 7.76.1
CNA
curlcurl
𝑥
≤ 7.76.0
CNA
curlcurl
𝑥
≤ 7.75.0
CNA
curlcurl
𝑥
≤ 7.74.0
CNA
curlcurl
𝑥
≤ 7.73.0
CNA
curlcurl
𝑥
≤ 7.72.0
CNA
curlcurl
𝑥
≤ 7.71.1
CNA
curlcurl
𝑥
≤ 7.71.0
CNA
curlcurl
𝑥
≤ 7.70.0
CNA
curlcurl
𝑥
≤ 7.69.1
CNA
curlcurl
𝑥
≤ 7.69.0
CNA
curlcurl
𝑥
≤ 7.68.0
CNA
curlcurl
𝑥
≤ 7.67.0
CNA
curlcurl
𝑥
≤ 7.66.0
CNA
curlcurl
𝑥
≤ 7.65.3
CNA
curlcurl
𝑥
≤ 7.65.2
CNA
curlcurl
𝑥
≤ 7.65.1
CNA
curlcurl
𝑥
≤ 7.65.0
CNA
curlcurl
𝑥
≤ 7.64.1
CNA
curlcurl
𝑥
≤ 7.64.0
CNA
curlcurl
𝑥
≤ 7.63.0
CNA
curlcurl
𝑥
≤ 7.62.0
CNA
curlcurl
𝑥
≤ 7.61.1
CNA
curlcurl
𝑥
≤ 7.61.0
CNA
curlcurl
𝑥
≤ 7.60.0
CNA
curlcurl
𝑥
≤ 7.59.0
CNA
curlcurl
𝑥
≤ 7.58.0
CNA
curlcurl
𝑥
≤ 7.57.0
CNA
curlcurl
𝑥
≤ 7.56.1
CNA
curlcurl
𝑥
≤ 7.56.0
CNA
curlcurl
𝑥
≤ 7.55.1
CNA
curlcurl
𝑥
≤ 7.55.0
CNA
curlcurl
𝑥
≤ 7.54.1
CNA
curlcurl
𝑥
≤ 7.54.0
CNA
curlcurl
𝑥
≤ 7.53.1
CNA
curlcurl
𝑥
≤ 7.53.0
CNA
curlcurl
𝑥
≤ 7.52.1
CNA
curlcurl
𝑥
≤ 7.52.0
CNA
curlcurl
𝑥
≤ 7.51.0
CNA
curlcurl
𝑥
≤ 7.50.3
CNA
curlcurl
𝑥
≤ 7.50.2
CNA
curlcurl
𝑥
≤ 7.50.1
CNA
curlcurl
𝑥
≤ 7.50.0
CNA
curlcurl
𝑥
≤ 7.49.1
CNA
curlcurl
𝑥
≤ 7.49.0
CNA
curlcurl
𝑥
≤ 7.48.0
CNA
curlcurl
𝑥
≤ 7.47.1
CNA
curlcurl
𝑥
≤ 7.47.0
CNA
curlcurl
𝑥
≤ 7.46.0
CNA
curlcurl
𝑥
≤ 7.45.0
CNA
curlcurl
𝑥
≤ 7.44.0
CNA
curlcurl
𝑥
≤ 7.43.0
CNA
curlcurl
𝑥
≤ 7.42.1
CNA
curlcurl
𝑥
≤ 7.42.0
CNA
curlcurl
𝑥
≤ 7.41.0
CNA
curlcurl
𝑥
≤ 7.40.0
CNA
curlcurl
𝑥
≤ 7.39.0
CNA
curlcurl
𝑥
≤ 7.38.0
CNA
curlcurl
𝑥
≤ 7.37.1
CNA
curlcurl
𝑥
≤ 7.37.0
CNA
curlcurl
𝑥
≤ 7.36.0
CNA
curlcurl
𝑥
≤ 7.35.0
CNA
curlcurl
𝑥
≤ 7.34.0
CNA
curlcurl
𝑥
≤ 7.33.0
CNA
Debian logo
Debian Releases
Debian Product
Codename
curl
bookworm
no-dsa
bookworm (security)
vulnerable
bullseye
postponed
bullseye (security)
vulnerable
forky
8.20.0-5
fixed
sid
8.20.0-5
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
curl
bionic
not-affected
focal
Fixed 7.68.0-1ubuntu2.25+esm3
released
jammy
Fixed 7.81.0-1ubuntu1.23
released
noble
Fixed 8.5.0-2ubuntu10.8
released
questing
Fixed 8.14.1-2ubuntu1.2
released
resolute
Fixed 8.18.0-1ubuntu2
released
trusty
not-affected
xenial
not-affected
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
curl
suse enterprise desktop 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise sap 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise server 12 SP5
8.0.1-11.120.1
fixed
suse enterprise server 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP6
8.14.1-150600.4.40.1
fixed
suse enterprise server 15 SP7
8.14.1-150700.7.14.1
fixed
libcurl-devel
suse enterprise desktop 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise sap 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise server 12 SP5
8.0.1-11.120.1
fixed
suse enterprise server 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP6
8.14.1-150600.4.40.1
fixed
suse enterprise server 15 SP7
8.14.1-150700.7.14.1
fixed
libcurl4
suse enterprise desktop 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise sap 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise server 12 SP5
8.0.1-11.120.1
fixed
suse enterprise server 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP6
8.14.1-150600.4.40.1
fixed
suse enterprise server 15 SP7
8.14.1-150700.7.14.1
fixed
libcurl4-32bit
suse enterprise desktop 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise sap 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise sap 15 SP7
8.14.1-150700.7.14.1
fixed
suse enterprise server 12 SP5
8.0.1-11.120.1
fixed
suse enterprise server 15 SP4
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP5
8.14.1-150400.5.80.1
fixed
suse enterprise server 15 SP6
8.14.1-150600.4.40.1
fixed
suse enterprise server 15 SP7
8.14.1-150700.7.14.1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
curl
Azure Linux 3.0
0:8.11.1-6.azl3
fixed