Updated: 2026-01-19 03:39:30.896764
Description:
An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 4.3 |
| CVSS Version 3.x | MEDIUM | 6.1 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| Debian 13 | python | 3.7 | 6.1 | MEDIUM | Not Vulnerable | 2025-12-09 20:16:04 | ||
| EL 10 | python | 2.7 | 6.1 | MEDIUM | Already Fixed | 2025-10-10 11:08:35 | ||
| EL 10 | python | 3.6 | 6.1 | MEDIUM | Not Vulnerable | 2025-12-09 20:18:54 | ||
| EL 7 | python | 2.7 | 6.1 | MEDIUM | Already Fixed | 2025-07-24 01:51:46 | ||
| EL 7 | python | 3.6 | 6.1 | MEDIUM | Already Fixed | 2025-07-16 01:30:34 | ||
| EL 8 | python | 2.7 | 6.1 | MEDIUM | Already Fixed | 2025-07-24 01:51:46 | ||
| EL 8 | python | 3.6 | 6.1 | MEDIUM | Already Fixed | 2025-07-16 01:30:34 | ||
| EL 9 | python | 3.6 | 6.1 | MEDIUM | Already Fixed | 2025-07-16 01:30:34 | ||
| EL 9 | python | 2.7 | 6.1 | MEDIUM | Already Fixed | 2025-07-24 01:51:45 | ||
| Ubuntu 16.04 | python | 2.7 | 6.1 | MEDIUM | Already Fixed | 2025-09-09 19:33:14 |