7.5
/ 10
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Using libcurl, when a custom `Host:` header is first set for an HTTP request
and a second request is subsequently done using the same *easy handle* but
without the custom `Host:` header set, the second request would use stale
information and pass on cookies meant for the first host in the second
request. Leak them.
and a second request is subsequently done using the same *easy handle* but
without the custom `Host:` header set, the second request would use stale
information and pass on cookies meant for the first host in the second
request. Leak them.
Basic Information
ID
CVE-2026-6276
Source
curl
Published
May 13, 2026 at 08:28
Modified
May 13, 2026 at 17:26
Affected Product
Vendor
curl
Product
curl
Version
8.19.0
Affected Versions
curl curl 8.19.0
curl curl 8.18.0
curl curl 8.17.0
curl curl 8.16.0
curl curl 8.15.0
curl curl 8.14.1
curl curl 8.14.0
curl curl 8.13.0
curl curl 8.12.1
curl curl 8.12.0
curl curl 8.11.1
curl curl 8.11.0
curl curl 8.10.1
curl curl 8.10.0
curl curl 8.9.1
curl curl 8.9.0
curl curl 8.8.0
curl curl 8.7.1
curl curl 8.7.0
curl curl 8.6.0
curl curl 8.5.0
curl curl 8.4.0
curl curl 8.3.0
curl curl 8.2.1
curl curl 8.2.0
curl curl 8.1.2
curl curl 8.1.1
curl curl 8.1.0
curl curl 8.0.1
curl curl 8.0.0
curl curl 7.88.1
curl curl 7.88.0
curl curl 7.87.0
curl curl 7.86.0
curl curl 7.85.0
curl curl 7.84.0
curl curl 7.83.1
curl curl 7.83.0
curl curl 7.82.0
curl curl 7.81.0
curl curl 7.80.0
curl curl 7.79.1
curl curl 7.79.0
curl curl 7.78.0
curl curl 7.77.0
curl curl 7.76.1
curl curl 7.76.0
curl curl 7.75.0
curl curl 7.74.0
curl curl 7.73.0
curl curl 7.72.0
curl curl 7.71.1
curl curl 7.71.0
curl curl 8.18.0
curl curl 8.17.0
curl curl 8.16.0
curl curl 8.15.0
curl curl 8.14.1
curl curl 8.14.0
curl curl 8.13.0
curl curl 8.12.1
curl curl 8.12.0
curl curl 8.11.1
curl curl 8.11.0
curl curl 8.10.1
curl curl 8.10.0
curl curl 8.9.1
curl curl 8.9.0
curl curl 8.8.0
curl curl 8.7.1
curl curl 8.7.0
curl curl 8.6.0
curl curl 8.5.0
curl curl 8.4.0
curl curl 8.3.0
curl curl 8.2.1
curl curl 8.2.0
curl curl 8.1.2
curl curl 8.1.1
curl curl 8.1.0
curl curl 8.0.1
curl curl 8.0.0
curl curl 7.88.1
curl curl 7.88.0
curl curl 7.87.0
curl curl 7.86.0
curl curl 7.85.0
curl curl 7.84.0
curl curl 7.83.1
curl curl 7.83.0
curl curl 7.82.0
curl curl 7.81.0
curl curl 7.80.0
curl curl 7.79.1
curl curl 7.79.0
curl curl 7.78.0
curl curl 7.77.0
curl curl 7.76.1
curl curl 7.76.0
curl curl 7.75.0
curl curl 7.74.0
curl curl 7.73.0
curl curl 7.72.0
curl curl 7.71.1
curl curl 7.71.0