VDB
ALPINE-CVE-2020-26137
ALPINE-CVE-2020-26137
PUBLISHED
CVSS 6.5 MEDIUM
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.15 | py3-urllib3 | 1.18-r0, 0, 1.24.1-r0 |
| Alpine:v3.13 | py3-urllib3 | 0, 1.25.8-r0, 1.25.7-r1 |
| Alpine:v3.23 | py3-urllib3 | 1.25.2-r0, 1.25.8-r0, 1.25.7-r1 |
| Alpine:v3.19 | py3-urllib3 | 1.25.8-r0, 1.18-r0, 1.21.1-r0 |
| Alpine:v3.21 | py3-urllib3 | 1.25.1-r0, 0, 1.18-r0 |
| Alpine:v3.20 | py3-urllib3 | 1.25.7-r1, 1.25.8-r0, 1.18-r0 |
| Alpine:v3.18 | py3-urllib3 | 1.18-r0, 0, 1.25.8-r0 |
| Alpine:v3.22 | py3-urllib3 | 1.25.7-r1, 1.25.8-r0, 1.18-r0 |
| Alpine:v3.17 | py3-urllib3 | 0, 0, 1.18-r0 |
| Alpine:v3.14 | py3-urllib3 | 1.22-r0, 1.25.8-r0, 1.25.7-r1 |
| Alpine:v3.16 | py3-urllib3 | 1.25.7-r1, 1.21.1-r0, 1.22-r0 |
Timeline
- Sep 30, 2020 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch