VDB
DEBIAN-CVE-2026-6253
DEBIAN-CVE-2026-6253
PUBLISHED
CVSS 5.900000095367432 MEDIUM
curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the following conditions are true: 1. curl is setup to use specific different proxies for different URL schemes 2. the first proxy needs credentials 3. the second proxy uses no credentials 4. while using the first proxy (using say `http://`), curl is asked to follow a redirect to a URL using another scheme (say `https://`), accessed using a second, different, proxy
Risk Scores
CVSS 3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | curl | 8.10.1-2, 0, 7.74.0-1.3 |
| Debian:13 | curl | 0, 8.19.0-2, 8.19.0-3 |
| Debian:12 | curl | 8.14.0, 0, 8.14.1-2 |
| Debian:14 | curl | 8.19.0-1, 8.19.0-1, 8.19.0-2 |
Timeline
- Apr 29, 2026 CVE Published
- May 14, 2026 CVE Updated