GHSA-r64q-w8jr-g9qp · Severity: medium · Ecosystem: pip — Improper Neutralization of CRLF Sequences in urllib3 library for Python
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
Conclusion & alert: CVE-2019-11236 is rated High Exploit Risk (68.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.06%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.47% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.59% | 2.06% | +1.47% |
| 2 | 2025-11-21 | 1.06% | 0.59% | -0.47% |
| 3 | 2025-11-18 | — | 1.06% | — |
Full EPSS history (26 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.0 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
GHSA-r64q-w8jr-g9qp · Severity: medium · Ecosystem: pip — Improper Neutralization of CRLF Sequences in urllib3 library for Python
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-11236 not yet assigned priority: Debian including 1 source packages (python-urllib3), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-11236 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-11236 |
ubuntu
|
medium | CVE-2019-11236 medium priority: Ubuntu including 1 source packages (python-urllib3), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 6. | https://ubuntu.com/security/CVE-2019-11236 |