CVE-2026-44432

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when HTTPResponse.drain_conn() was called after the response had been read and decompressed partially (compression algorithm did not matter here). These issues could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This could result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data) on the client side. This vulnerability is fixed in 2.7.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

May 13, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated May 13, 2026
Patch available. Sources: github.
github Patch Available

Decompression-bomb safeguards bypassed in parts of the streaming API · Advisory · urllib3/urllib3 · GitHub

https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j

Vendor Advisories for CVE-2026-44432(20)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpython-urllib3-0:1.26.5-5.el9_4.42026-08-26redhat
redhatpython-urllib3-0:1.26.5-3.el9_2.42026-08-26redhat
redhatpython-urllib3-0:1.26.5-6.el9_6.22026-08-25redhat
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
redhatmta/mta-rhel9-operator:17864814812026-08-18redhat
redhatsatellite/iop-advisor-backend-rhel9:17845582592026-08-06redhat
redhatrhui5/rhua-rhel9:17847950762026-07-23redhat
redhatmta/mta-solution-server-rhel9:17841098832026-07-21redhat
redhatrhoai/odh-vllm-rocm-rhel9:17839988572026-07-21redhat
redhatquay/quay-rhel8:17843519662026-07-21redhat
redhatautomation-controller-0:4.6.30-2.el9ap2026-07-20redhat
redhatansible-automation-platform-tech-preview/metrics-service-rhel9:17839691392026-07-20redhat
redhatautomation-controller-0:4.7.14-3.el9ap2026-07-20redhat
redhatansible-automation-platform-25/hub-rhel8:17840505982026-07-20redhat
redhatquay/quay-rhel9:17839558462026-07-16redhat
redhatrhoai/odh-trustyai-garak-lls-provider-dsp-rhel9:17824723742026-07-09redhat
redhatsatellite/foreman-mcp-server-rhel9:17827393442026-07-07redhat
redhatsatellite/iop-insights-engine-rhel9:17824484552026-07-01redhat
redhatsatellite/iop-puptoo-rhel9:17803934512026-07-01redhat
redhatpython3.12-urllib3-0:2.7.0-1.el9ap2026-07-01redhat
redhatsatellite/iop-yuptoo-rhel9:17823804822026-07-01redhat
redhatansible-automation-platform-26/lightspeed-chatbot-rhel9:17826507472026-07-01redhat
redhatsatellite/iop-vmaas-rhel9:17821396192026-07-01redhat
redhatquay/quay-rhel8:17824877172026-06-30redhat
redhatpython3.12-urllib3-0:1.26.19-3.el8_102026-06-29redhat
redhatdiscovery/discovery-ui-rhel9:17827565412026-06-29redhat
redhatrhaiis/model-opt-cuda-rhel9:17823529502026-06-25redhat
redhatquay/quay-rhel8:17819373572026-06-25redhat
redhatrhaiis/vllm-rocm-rhel9:17823530932026-06-25redhat
redhatrhaiis/vllm-spyre-rhel9:17823529192026-06-25redhat

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

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-urllib32.3.0-3 ... 2.6.3-2 (6 versions)2.7.0-1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
urllib32.6.0, 2.6.1, 2.6.2, 2.6.32.7.0—

Weakness Classification(1)

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

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 45× 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 244 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:31 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:01 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 09:37 UTCEPSS rescore
  9. 2026-09-10 13:40 UTCVendor advisory
  10. 2026-09-10 12:26 UTCEG score recompute
  11. 2026-09-10 12:26 UTCVendor advisory
  12. 2026-09-10 09:34 UTCEPSS rescore
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-07 16:01 UTCEPSS rescore
  15. 2026-09-07 12:45 UTCEG score recompute
  16. 2026-09-07 12:45 UTCVendor advisory
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-04 05:06 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:41 UTCEPSS rescore
  24. 2026-08-27 14:25 UTCEPSS rescore
  25. 2026-08-27 13:35 UTCVendor advisory
Show 75 more
  1. 2026-08-27 13:02 UTCVendor advisory
  2. 2026-08-26 16:10 UTCEG score recompute
  3. 2026-08-26 16:10 UTCVendor advisory
  4. 2026-08-26 14:46 UTCEPSS rescore
  5. 2026-08-26 12:21 UTCEG score recompute
  6. 2026-08-26 12:21 UTCVendor advisory
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-25 13:24 UTCVendor advisory
  9. 2026-08-25 12:20 UTCEG score recompute
  10. 2026-08-25 12:20 UTCVendor advisory
  11. 2026-08-24 13:29 UTCVendor advisory
  12. 2026-08-24 12:25 UTCEG score recompute
  13. 2026-08-24 12:25 UTCVendor advisory
  14. 2026-08-23 17:53 UTCEG score recompute
  15. 2026-08-23 17:53 UTCVendor advisory
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 20:58 UTCEG score recompute
  20. 2026-08-20 20:58 UTCVendor advisory
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-19 12:27 UTCVendor advisory
  23. 2026-08-19 12:11 UTCEG score recompute
  24. 2026-08-19 12:11 UTCVendor advisory
  25. 2026-08-18 13:48 UTCEPSS rescore
  26. 2026-08-17 13:47 UTCEPSS rescore
  27. 2026-08-17 12:26 UTCVendor advisory
  28. 2026-08-17 12:12 UTCVendor advisory
  29. 2026-08-17 10:40 UTCEG score recompute
  30. 2026-08-17 10:40 UTCVendor advisory
  31. 2026-08-16 14:56 UTCEPSS rescore
  32. 2026-08-16 04:04 UTCEG score recompute
  33. 2026-08-16 04:04 UTCVendor advisory
  34. 2026-08-16 02:14 UTCEPSS rescore
  35. 2026-08-15 01:30 UTCEPSS rescore
  36. 2026-08-15 00:36 UTCVendor advisory
  37. 2026-08-14 13:34 UTCVendor advisory
  38. 2026-08-14 02:33 UTCEG score recompute
  39. 2026-08-14 02:33 UTCVendor advisory
  40. 2026-08-13 22:00 UTCEPSS rescore
  41. 2026-08-13 10:47 UTCVendor advisory
  42. 2026-08-12 23:39 UTCEG score recompute
  43. 2026-08-12 23:39 UTCVendor advisory
  44. 2026-08-12 13:51 UTCEPSS rescore
  45. 2026-08-12 12:37 UTCVendor advisory
  46. 2026-08-12 12:12 UTCVendor advisory
  47. 2026-08-11 15:29 UTCEG score recompute
  48. 2026-08-11 15:29 UTCVendor advisory
  49. 2026-08-11 13:43 UTCEPSS rescore
  50. 2026-08-11 00:57 UTCEG score recompute
  51. 2026-08-11 00:57 UTCVendor advisory
  52. 2026-08-11 00:00 UTCEPSS rescore
  53. 2026-08-10 12:26 UTCVendor advisory
  54. 2026-08-10 11:30 UTCVendor advisory
  55. 2026-08-09 23:58 UTCEG score recompute
  56. 2026-08-09 23:58 UTCVendor advisory
  57. 2026-08-09 13:46 UTCEPSS rescore
  58. 2026-08-09 12:57 UTCVendor advisory
  59. 2026-08-09 01:55 UTCEG score recompute
  60. 2026-08-09 01:55 UTCVendor advisory
  61. 2026-08-08 16:37 UTCEPSS rescore
  62. 2026-08-08 10:28 UTCVendor advisory
  63. 2026-08-07 23:27 UTCEG score recompute
  64. 2026-08-07 23:27 UTCVendor advisory
  65. 2026-08-07 12:25 UTCVendor advisory
  66. 2026-08-07 12:09 UTCVendor advisory
  67. 2026-08-07 07:07 UTCVendor advisory
  68. 2026-08-06 19:45 UTCEG score recompute
  69. 2026-08-06 19:45 UTCVendor advisory
  70. 2026-08-06 13:46 UTCEPSS rescore
  71. 2026-08-06 08:43 UTCVendor advisory
  72. 2026-08-05 21:41 UTCEG score recompute
  73. 2026-08-05 21:41 UTCVendor advisory
  74. 2026-08-05 19:17 UTCEPSS rescore
  75. 2026-08-04 15:10 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-44432?
CVE-2026-44432 is a high vulnerability published on May 13, 2026. urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when…
When was CVE-2026-44432 disclosed?
CVE-2026-44432 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44432 actively exploited?
CVE-2026-44432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.1% of all scored CVEs.
What is the CVSS score of CVE-2026-44432?
CVE-2026-44432 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-44432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44432, 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-2026-44432

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