CVE-2026-6276
EUVD-2026-2992813.05.2026, 13:01
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.Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| curl | curl | 𝑥 ≤ 8.19.0 | CNA |
| curl | curl | 𝑥 ≤ 8.18.0 | CNA |
| curl | curl | 𝑥 ≤ 8.17.0 | CNA |
| curl | curl | 𝑥 ≤ 8.16.0 | CNA |
| curl | curl | 𝑥 ≤ 8.15.0 | CNA |
| curl | curl | 𝑥 ≤ 8.14.1 | CNA |
| curl | curl | 𝑥 ≤ 8.14.0 | CNA |
| curl | curl | 𝑥 ≤ 8.13.0 | CNA |
| curl | curl | 𝑥 ≤ 8.12.1 | CNA |
| curl | curl | 𝑥 ≤ 8.12.0 | CNA |
| curl | curl | 𝑥 ≤ 8.11.1 | CNA |
| curl | curl | 𝑥 ≤ 8.11.0 | CNA |
| curl | curl | 𝑥 ≤ 8.10.1 | CNA |
| curl | curl | 𝑥 ≤ 8.10.0 | CNA |
| curl | curl | 𝑥 ≤ 8.9.1 | CNA |
| curl | curl | 𝑥 ≤ 8.9.0 | CNA |
| curl | curl | 𝑥 ≤ 8.8.0 | CNA |
| curl | curl | 𝑥 ≤ 8.7.1 | CNA |
| curl | curl | 𝑥 ≤ 8.7.0 | CNA |
| curl | curl | 𝑥 ≤ 8.6.0 | CNA |
| curl | curl | 𝑥 ≤ 8.5.0 | CNA |
| curl | curl | 𝑥 ≤ 8.4.0 | CNA |
| curl | curl | 𝑥 ≤ 8.3.0 | CNA |
| curl | curl | 𝑥 ≤ 8.2.1 | CNA |
| curl | curl | 𝑥 ≤ 8.2.0 | CNA |
| curl | curl | 𝑥 ≤ 8.1.2 | CNA |
| curl | curl | 𝑥 ≤ 8.1.1 | CNA |
| curl | curl | 𝑥 ≤ 8.1.0 | CNA |
| curl | curl | 𝑥 ≤ 8.0.1 | CNA |
| curl | curl | 𝑥 ≤ 8.0.0 | CNA |
| curl | curl | 𝑥 ≤ 7.88.1 | CNA |
| curl | curl | 𝑥 ≤ 7.88.0 | CNA |
| curl | curl | 𝑥 ≤ 7.87.0 | CNA |
| curl | curl | 𝑥 ≤ 7.86.0 | CNA |
| curl | curl | 𝑥 ≤ 7.85.0 | CNA |
| curl | curl | 𝑥 ≤ 7.84.0 | CNA |
| curl | curl | 𝑥 ≤ 7.83.1 | CNA |
| curl | curl | 𝑥 ≤ 7.83.0 | CNA |
| curl | curl | 𝑥 ≤ 7.82.0 | CNA |
| curl | curl | 𝑥 ≤ 7.81.0 | CNA |
| curl | curl | 𝑥 ≤ 7.80.0 | CNA |
| curl | curl | 𝑥 ≤ 7.79.1 | CNA |
| curl | curl | 𝑥 ≤ 7.79.0 | CNA |
| curl | curl | 𝑥 ≤ 7.78.0 | CNA |
| curl | curl | 𝑥 ≤ 7.77.0 | CNA |
| curl | curl | 𝑥 ≤ 7.76.1 | CNA |
| curl | curl | 𝑥 ≤ 7.76.0 | CNA |
| curl | curl | 𝑥 ≤ 7.75.0 | CNA |
| curl | curl | 𝑥 ≤ 7.74.0 | CNA |
| curl | curl | 𝑥 ≤ 7.73.0 | CNA |
| curl | curl | 𝑥 ≤ 7.72.0 | CNA |
| curl | curl | 𝑥 ≤ 7.71.1 | CNA |
| curl | curl | 𝑥 ≤ 7.71.0 | CNA |
Debian Releases
Ubuntu Releases
openSUSE / SLES Releases
openSUSE Product | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| curl |
| ||||||||
| libcurl-devel |
| ||||||||
| libcurl4 |
| ||||||||
| libcurl4-32bit |
|
Vulnerability Media Exposure