CVE-2019-11236

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 2.1%, top 21% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 6.1Exploit: None knownExposed: 0

A fix is available — apply it.

In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
81%
KEV
Not listed

Published

April 15, 2019

Last Modified

November 21, 2024

References (30)

Vendor Advisories for CVE-2019-11236(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3-urllib3 (1.22-1ubuntu0.18.04.1) @ bionic2026-05-27ubuntu
ubuntupython3-urllib3 (1.7.1-1ubuntu4.1+esm1) @ trusty2026-05-27ubuntu
redhatpython-urllib3-0:1.24.3-1.el72020-07-07redhat
redhatpython-pip-0:9.0.3-7.el7_82020-05-12redhat
redhatpython-virtualenv-0:15.1.0-4.el7_82020-05-12redhat
redhatpython-pip-0:9.0.3-16.el82020-04-28redhat
redhatpython27:2.7-8020020200117110429.90f98d4f2020-04-28redhat
redhatansible-tower-36/ansible-tower:3.6.4-12020-04-22redhat
redhatansible-tower-35/ansible-tower:3.5.6-12020-04-22redhat
redhatpython-pip-0:9.0.3-7.el7_72020-03-17redhat
redhatpython-virtualenv-0:15.1.0-4.el7_72020-03-17redhat
redhatpython27:2.7-8010020190903182548.51c94b972019-11-05redhat
redhatpython-urllib3-0:1.24.2-2.el82019-11-05redhat
redhatpython-urllib3-0:1.10.2-7.el72019-08-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 8 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
python-urllib31.24.1-11.24.1-1+deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
python-urllib3—1.25.6-4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
python-urllib3—1.25.6-4—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
python-urllib3—1.25.6-4—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-urllib3—1.25.6-4—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
python-urllib31.9.1-31.9.1-3+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
python-urllib31.19.1-11.19.1-1+deb9u1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
urllib30.2 ... 1.24.2 (49 versions)1.24.3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(12)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 145 total refreshes for this CVE.

  1. 2026-09-18 19:22 UTCEPSS rescore
  2. 2026-09-17 19:22 UTCEPSS rescore
  3. 2026-09-16 14:04 UTCEPSS rescore
  4. 2026-09-15 03:05 UTCEPSS rescore
  5. 2026-09-12 14:56 UTCEPSS rescore
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  7. 2026-09-08 21:55 UTCEPSS rescore
  8. 2026-09-08 13:04 UTCOSV refresh
  9. 2026-09-07 15:57 UTCEPSS rescore
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  21. 2026-08-25 13:45 UTCEPSS rescore
  22. 2026-08-21 23:45 UTCEPSS rescore
  23. 2026-08-21 23:41 UTCOSV refresh
  24. 2026-08-20 22:51 UTCEPSS rescore
  25. 2026-08-19 17:00 UTCEPSS rescore
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  1. 2026-08-18 13:44 UTCEPSS rescore
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  6. 2026-08-13 21:56 UTCEPSS rescore
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  10. 2026-08-07 16:23 UTCEPSS rescore
  11. 2026-08-06 13:43 UTCEPSS rescore
  12. 2026-08-06 05:21 UTCOSV refresh
  13. 2026-08-05 19:13 UTCEPSS rescore
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  19. 2026-07-30 16:24 UTCEPSS rescore
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  21. 2026-07-28 15:32 UTCEPSS rescore
  22. 2026-07-26 14:51 UTCEPSS rescore
  23. 2026-07-25 14:14 UTCEPSS rescore
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  26. 2026-07-23 14:15 UTCEPSS rescore
  27. 2026-07-23 01:38 UTCEG score recompute
  28. 2026-07-22 22:19 UTCEG score recompute
  29. 2026-07-22 14:05 UTCEPSS rescore
  30. 2026-07-21 15:22 UTCEPSS rescore
  31. 2026-07-21 15:22 UTCEPSS rescore
  32. 2026-07-20 18:02 UTCOSV refresh
  33. 2026-07-20 17:04 UTCEPSS rescore
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  42. 2026-07-13 22:27 UTCEPSS rescore
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  45. 2026-07-12 05:43 UTCEPSS rescore
  46. 2026-07-11 08:24 UTCEPSS rescore
  47. 2026-07-09 19:06 UTCEPSS rescore
  48. 2026-07-08 15:11 UTCEPSS rescore
  49. 2026-07-07 13:42 UTCEPSS rescore
  50. 2026-07-06 16:25 UTCEPSS rescore
  51. 2026-07-06 02:20 UTCEPSS rescore
  52. 2026-07-05 02:27 UTCEPSS rescore
  53. 2026-07-04 06:28 UTCEPSS rescore
  54. 2026-07-04 06:28 UTCEPSS rescore
  55. 2026-07-03 13:26 UTCOSV refresh
  56. 2026-07-02 16:56 UTCEPSS rescore
  57. 2026-07-01 15:03 UTCEPSS rescore
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  59. 2026-06-30 23:20 UTCEPSS rescore
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  74. 2026-06-21 14:54 UTCEPSS rescore
  75. 2026-06-21 14:54 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-11236?
CVE-2019-11236 is a medium vulnerability published on April 15, 2019. In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
When was CVE-2019-11236 disclosed?
CVE-2019-11236 was first published in the National Vulnerability Database on April 15, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-11236 actively exploited?
CVE-2019-11236 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 19.4% of all scored CVEs.
What is the CVSS score of CVE-2019-11236?
CVE-2019-11236 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2019-11236?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11236, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-11236

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