CVE-2026-44432

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% 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
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 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)
EPSS
48.6%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 22, 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(29)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhaiis/vllm-rocm-rhel9:17823530932026-06-25redhat
redhatquay/quay-rhel8:17819373572026-06-25redhat
redhatrhaiis/model-opt-cuda-rhel9:17823529502026-06-25redhat
redhatrhaiis/vllm-cuda-rhel9:17823528472026-06-25redhat
redhatrhaiis/vllm-spyre-rhel9:17823529192026-06-25redhat
redhatquay/quay-rhel8:17818780702026-06-23redhat
redhatpython3.14-urllib3-0:2.6.3-2.el9_82026-06-23redhat
redhatpython3.12-urllib3-0:1.26.19-3.el9_82026-06-23redhat
redhatpython-urllib3-0:1.26.5-8.el9_82026-06-23redhat
redhatpython3.14-urllib3-0:2.6.3-2.el10_22026-06-22redhat
redhatpython-urllib3-0:1.26.19-4.el10_22026-06-22redhat
redhatsatellite/iop-insights-engine-rhel9:17797113342026-06-16redhat
redhatsatellite/iop-puptoo-rhel9:17797926512026-06-16redhat
redhatdiscovery/discovery-server-rhel9:17793952282026-06-15redhat
redhatansible-automation-platform-27/hub-rhel9:17811028162026-06-15redhat
redhatjaeger-main-2.19.0-1.hum12026-06-10redhat
redhatmariadb11-8-main-11.8.8-1.hum12026-06-10redhat
redhatrhaii/vllm-cuda-rhel9:17803569142026-06-08redhat
redhatrhaii/model-opt-cuda-rhel9:17803569412026-06-08redhat
redhatpython-rpds-py-main-2026.5.1-1.hum12026-06-08redhat
redhatrhaii/vllm-spyre-rhel9:17803569042026-06-08redhat
redhatrhtas/model-transparency-rhel9:17809148862026-06-08redhat
redhatrhaii/vllm-cpu-rhel9:17803568112026-06-08redhat
redhatrhtas/segment-reporting-rhel9:17805601172026-06-08redhat
redhatllvm21-main-21.1.8-6.hum12026-06-07redhat
redhatpython-cryptography-main-48.0.0-3.hum12026-06-07redhat
redhatpython-trustme-main-1.2.1-2.hum12026-06-07redhat
redhatpython-urllib3-main-2.7.0-3.hum12026-06-07redhat
redhatrust-main-1.96.0-1.hum12026-06-03redhat

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

(1 across 1 ecosystem)
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 8× in last 7d / 37× 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 119 total refreshes for this CVE.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 02:29 UTCEPSS rescore
  6. 2026-07-18 10:04 UTCEPSS rescore
  7. 2026-07-18 02:59 UTCOSV refresh
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 02:00 UTCEPSS rescore
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 06:13 UTCEPSS rescore
  13. 2026-07-12 05:46 UTCEPSS rescore
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-09 19:10 UTCEPSS rescore
  16. 2026-07-08 15:16 UTCEPSS rescore
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-06 16:27 UTCEPSS rescore
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-05 02:30 UTCEPSS rescore
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-01 15:07 UTCEPSS rescore
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-29 22:23 UTCVendor advisory
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 11:28 UTCVendor advisory
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 23:32 UTCVendor advisory
  5. 2026-06-27 08:11 UTCVendor advisory
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-26 20:32 UTCVendor advisory
  8. 2026-06-25 19:40 UTCVendor advisory
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-25 13:49 UTCEPSS rescore
  11. 2026-06-24 14:05 UTCEPSS rescore
  12. 2026-06-23 21:33 UTCEPSS rescore
  13. 2026-06-22 14:25 UTCEPSS rescore
  14. 2026-06-22 14:25 UTCEPSS rescore
  15. 2026-06-21 14:56 UTCEPSS rescore
  16. 2026-06-21 14:56 UTCEPSS rescore
  17. 2026-06-21 01:59 UTCEPSS rescore
  18. 2026-06-19 19:25 UTCEPSS rescore
  19. 2026-06-18 17:52 UTCEPSS rescore
  20. 2026-06-18 17:52 UTCEPSS rescore
  21. 2026-06-17 17:53 UTCEPSS rescore
  22. 2026-06-17 14:33 UTCVendor advisory
  23. 2026-06-16 23:05 UTCVendor advisory
  24. 2026-06-16 17:52 UTCEPSS rescore
  25. 2026-06-16 11:56 UTCVendor advisory
  26. 2026-06-16 00:54 UTCVendor advisory
  27. 2026-06-15 17:49 UTCEPSS rescore
  28. 2026-06-14 21:51 UTCVendor advisory
  29. 2026-06-14 10:49 UTCVendor advisory
  30. 2026-06-13 23:46 UTCVendor advisory
  31. 2026-06-13 23:00 UTCEPSS rescore
  32. 2026-06-13 05:27 UTCVendor advisory
  33. 2026-06-12 23:12 UTCEPSS rescore
  34. 2026-06-12 23:12 UTCEPSS rescore
  35. 2026-06-12 18:24 UTCVendor advisory
  36. 2026-06-12 07:13 UTCVendor advisory
  37. 2026-06-11 20:12 UTCVendor advisory
  38. 2026-06-11 14:00 UTCEPSS rescore
  39. 2026-06-11 09:10 UTCVendor advisory
  40. 2026-06-10 22:18 UTCEPSS rescore
  41. 2026-06-10 22:09 UTCVendor advisory
  42. 2026-06-10 13:22 UTCEPSS rescore
  43. 2026-06-10 13:22 UTCEPSS rescore
  44. 2026-06-10 11:07 UTCVendor advisory
  45. 2026-06-10 00:06 UTCVendor advisory
  46. 2026-06-09 13:04 UTCVendor advisory
  47. 2026-06-09 02:03 UTCVendor advisory
  48. 2026-06-08 14:44 UTCVendor advisory
  49. 2026-06-08 14:17 UTCEPSS rescore
  50. 2026-06-08 14:17 UTCEPSS rescore
  51. 2026-06-08 03:43 UTCVendor advisory
  52. 2026-06-07 16:42 UTCVendor advisory
  53. 2026-06-07 15:25 UTCEPSS rescore
  54. 2026-06-07 15:25 UTCEPSS rescore
  55. 2026-06-07 05:40 UTCVendor advisory
  56. 2026-06-06 18:39 UTCVendor advisory
  57. 2026-06-06 13:47 UTCEPSS rescore
  58. 2026-06-06 13:47 UTCEPSS rescore
  59. 2026-06-06 07:37 UTCVendor advisory
  60. 2026-06-05 22:47 UTCEPSS rescore
  61. 2026-06-05 20:35 UTCVendor advisory
  62. 2026-06-05 09:33 UTCVendor advisory
  63. 2026-06-05 06:10 UTCEPSS rescore
  64. 2026-06-05 06:10 UTCEPSS rescore
  65. 2026-06-04 22:30 UTCVendor advisory
  66. 2026-06-04 13:12 UTCEPSS rescore
  67. 2026-06-04 13:12 UTCEPSS rescore
  68. 2026-06-04 11:28 UTCVendor advisory
  69. 2026-06-04 00:26 UTCVendor advisory
  70. 2026-06-03 13:24 UTCVendor advisory
  71. 2026-06-03 02:16 UTCVendor advisory
  72. 2026-06-02 20:13 UTCEPSS rescore
  73. 2026-06-02 15:13 UTCVendor advisory
  74. 2026-06-02 04:11 UTCVendor advisory
  75. 2026-06-01 17:07 UTCVendor advisory

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 July 22, 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 48.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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

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