CVE-2026-11856

EUVD-2026-41501
Successfully using libcurl to do a transfer to a specific HTTP origin
(`hostA`) with **Digest** authentication and then changing the origin to a
different one (`hostB`) for a second transfer, reusing the same handle, makes
libcurl wrongly pass on the  `Authorization:` header field meant for `hostA`,
to `hostB`.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
curlCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 46.06%
Affected Products (NVD)
VendorProductVersion
haxxcurl
7.10.6 ≤
𝑥
< 8.21.0
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
curlcurl
𝑥
≤ 8.20.0
CNA
curlcurl
𝑥
≤ 8.19.0
CNA
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
curlcurl
𝑥
≤ 7.32.0
CNA
curlcurl
𝑥
≤ 7.31.0
CNA
curlcurl
𝑥
≤ 7.30.0
CNA
curlcurl
𝑥
≤ 7.29.0
CNA
curlcurl
𝑥
≤ 7.28.1
CNA
curlcurl
𝑥
≤ 7.28.0
CNA
curlcurl
𝑥
≤ 7.27.0
CNA
curlcurl
𝑥
≤ 7.26.0
CNA
curlcurl
𝑥
≤ 7.25.0
CNA
curlcurl
𝑥
≤ 7.24.0
CNA
curlcurl
𝑥
≤ 7.23.1
CNA
curlcurl
𝑥
≤ 7.23.0
CNA
curlcurl
𝑥
≤ 7.22.0
CNA
curlcurl
𝑥
≤ 7.21.7
CNA
curlcurl
𝑥
≤ 7.21.6
CNA
curlcurl
𝑥
≤ 7.21.5
CNA
curlcurl
𝑥
≤ 7.21.4
CNA
curlcurl
𝑥
≤ 7.21.3
CNA
curlcurl
𝑥
≤ 7.21.2
CNA
curlcurl
𝑥
≤ 7.21.1
CNA
curlcurl
𝑥
≤ 7.21.0
CNA
curlcurl
𝑥
≤ 7.20.1
CNA
curlcurl
𝑥
≤ 7.20.0
CNA
curlcurl
𝑥
≤ 7.19.7
CNA
curlcurl
𝑥
≤ 7.19.6
CNA
curlcurl
𝑥
≤ 7.19.5
CNA
curlcurl
𝑥
≤ 7.19.4
CNA
curlcurl
𝑥
≤ 7.19.3
CNA
curlcurl
𝑥
≤ 7.19.2
CNA
curlcurl
𝑥
≤ 7.19.1
CNA
curlcurl
𝑥
≤ 7.19.0
CNA
curlcurl
𝑥
≤ 7.18.2
CNA
curlcurl
𝑥
≤ 7.18.1
CNA
curlcurl
𝑥
≤ 7.18.0
CNA
curlcurl
𝑥
≤ 7.17.1
CNA
curlcurl
𝑥
≤ 7.17.0
CNA
curlcurl
𝑥
≤ 7.16.4
CNA
curlcurl
𝑥
≤ 7.16.3
CNA
curlcurl
𝑥
≤ 7.16.2
CNA
curlcurl
𝑥
≤ 7.16.1
CNA
curlcurl
𝑥
≤ 7.16.0
CNA
curlcurl
𝑥
≤ 7.15.5
CNA
curlcurl
𝑥
≤ 7.15.4
CNA
curlcurl
𝑥
≤ 7.15.3
CNA
curlcurl
𝑥
≤ 7.15.2
CNA
curlcurl
𝑥
≤ 7.15.1
CNA
curlcurl
𝑥
≤ 7.15.0
CNA
curlcurl
𝑥
≤ 7.14.1
CNA
curlcurl
𝑥
≤ 7.14.0
CNA
curlcurl
𝑥
≤ 7.13.2
CNA
curlcurl
𝑥
≤ 7.13.1
CNA
curlcurl
𝑥
≤ 7.13.0
CNA
curlcurl
𝑥
≤ 7.12.3
CNA
curlcurl
𝑥
≤ 7.12.2
CNA
curlcurl
𝑥
≤ 7.12.1
CNA
curlcurl
𝑥
≤ 7.12.0
CNA
curlcurl
𝑥
≤ 7.11.2
CNA
curlcurl
𝑥
≤ 7.11.1
CNA
curlcurl
𝑥
≤ 7.11.0
CNA
curlcurl
𝑥
≤ 7.10.8
CNA
curlcurl
𝑥
≤ 7.10.7
CNA
curlcurl
𝑥
≤ 7.10.6
CNA
Debian logo
Debian Releases
Debian Product
Codename
curl
bookworm
postponed
bookworm (security)
vulnerable
bullseye
postponed
bullseye (security)
vulnerable
forky
8.21.0-2
fixed
sid
8.21.0-2
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
curl
bionic
ignored
focal
ignored
jammy
ignored
noble
ignored
questing
ignored
resolute
ignored
trusty
ignored
xenial
ignored
Azure Linux logo
Azure Linux Releases
Azure Package
Release
cmake
Azure Linux 3.0
0:3.30.3-15.azl3
fixed
curl
Azure Linux 3.0
0:8.11.1-11.azl3
fixed