CVE-2026-44432

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.9% (58th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 13, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated May 13, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

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 / EcosystemFix (by version range) / PatchReleasedSource
redhatrhaii/model-opt-cuda-rhel9:17918038212026-10-13redhat
redhatrhaii/vllm-gaudi-rhel9:17914271822026-10-13redhat
redhatrhaii/vllm-cuda-rhel9:17914736312026-10-13redhat
redhatrhaii/vllm-spyre-rhel9:17918183572026-10-13redhat
redhatrhaii/vllm-cpu-rhel9:17914736142026-10-13redhat
redhatrhaii/vllm-rocm-rhel9:17914258692026-10-13redhat
redhatrhai/base-image-cpu-rhel9:17907035902026-10-01redhat
redhatrhai/base-image-tpu-rhel9:17907034972026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907035062026-10-01redhat
redhatrhai/base-image-cuda-rhel9:17907035862026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907034942026-10-01redhat
redhatrhai/base-image-neuron-rhel9:17907035422026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035682026-10-01redhat
redhatrhaiis/model-opt-cuda-rhel9:17906217142026-09-30redhat
redhatrhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9:17902609542026-09-30redhat
redhatrhai/base-image-cpu-rhel9:17902770452026-09-30redhat
redhatrhaiis/vllm-cuda-rhel9:17906217182026-09-30redhat
redhatrhai/base-image-tpu-rhel9:17902768842026-09-30redhat
redhatrhai/base-image-cuda-rhel9:17902769742026-09-30redhat
redhatrhai/base-image-rocm-rhel9:17902768862026-09-30redhat
redhatrhaiis/vllm-rocm-rhel9:17906217132026-09-30redhat
redhatrhai/base-image-spyre-rhel9:17902768892026-09-30redhat
redhatquay/quay-rhel8:17885938432026-09-22redhat
redhatpython-urllib3-0:1.26.5-3.el9_2.42026-08-26redhat
redhatpython-urllib3-0:1.26.5-5.el9_4.42026-08-26redhat
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
redhatquay/quay-rhel9:17861819812026-08-12redhat
redhatsatellite/iop-advisor-backend-rhel9:17845582592026-08-06redhat

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

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
python-urllib32.3.0-3 ... 2.6.3-2 (6 versions)
  • every version up to 2.7.0-1: fixed in 2.7.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
urllib32.6.0, 2.6.1, 2.6.2, 2.6.3
  • 2.6.0 up to 2.7.0: fixed in 2.7.0
—

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 10× in last 7d / 31× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 275 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 175 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  3. 2026-10-18 03:39 UTCEG score recompute
  4. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  5. 2026-10-17 13:59 UTCEG score recompute
  6. 2026-10-17 13:59 UTCVendor advisory
  7. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  8. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  9. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  10. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  11. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  12. 2026-10-12 16:05 UTCEG score recompute
  13. 2026-10-11 19:47 UTCEG score recompute
  14. 2026-10-11 17:01 UTCEG score recompute
  15. 2026-10-11 14:27 UTCEG score recompute
  16. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  17. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  18. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  19. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  23. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  24. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.9% · 57th percentile
Show 75 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  2. 2026-09-29 20:02 UTCOSV refresh
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  4. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  5. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  8. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  9. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  10. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  11. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  12. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  13. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  14. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  15. 2026-09-10 13:40 UTCVendor advisory
  16. 2026-09-10 12:26 UTCEG score recompute
  17. 2026-09-10 12:26 UTCVendor advisory
  18. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  19. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  21. 2026-09-07 12:45 UTCEG score recompute
  22. 2026-09-07 12:45 UTCVendor advisory
  23. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  24. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  27. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  28. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  29. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  31. 2026-08-27 13:35 UTCVendor advisory
  32. 2026-08-27 13:02 UTCVendor advisory
  33. 2026-08-26 16:10 UTCEG score recompute
  34. 2026-08-26 16:10 UTCVendor advisory
  35. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  36. 2026-08-26 12:21 UTCEG score recompute
  37. 2026-08-26 12:21 UTCVendor advisory
  38. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  39. 2026-08-25 13:24 UTCVendor advisory
  40. 2026-08-25 12:20 UTCEG score recompute
  41. 2026-08-25 12:20 UTCVendor advisory
  42. 2026-08-24 13:29 UTCVendor advisory
  43. 2026-08-24 12:25 UTCEG score recompute
  44. 2026-08-24 12:25 UTCVendor advisory
  45. 2026-08-23 17:53 UTCEG score recompute
  46. 2026-08-23 17:53 UTCVendor advisory
  47. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  48. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  49. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  50. 2026-08-20 20:58 UTCEG score recompute
  51. 2026-08-20 20:58 UTCVendor advisory
  52. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  53. 2026-08-19 12:27 UTCVendor advisory
  54. 2026-08-19 12:11 UTCEG score recompute
  55. 2026-08-19 12:11 UTCVendor advisory
  56. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  57. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  58. 2026-08-17 12:26 UTCVendor advisory
  59. 2026-08-17 12:12 UTCVendor advisory
  60. 2026-08-17 10:40 UTCEG score recompute
  61. 2026-08-17 10:40 UTCVendor advisory
  62. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  63. 2026-08-16 04:04 UTCEG score recompute
  64. 2026-08-16 04:04 UTCVendor advisory
  65. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  66. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  67. 2026-08-15 00:36 UTCVendor advisory
  68. 2026-08-14 13:34 UTCVendor advisory
  69. 2026-08-14 02:33 UTCEG score recompute
  70. 2026-08-14 02:33 UTCVendor advisory
  71. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  72. 2026-08-13 10:47 UTCVendor advisory
  73. 2026-08-12 23:39 UTCEG score recompute
  74. 2026-08-12 23:39 UTCVendor advisory
  75. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.7% · 49th percentile

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-44432?
CVE-2026-44432 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-44432 published?
The CVE record for CVE-2026-44432 was published on May 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 10, 2026; the record at its source may have been updated since.
Is CVE-2026-44432 actively exploited?
CVE-2026-44432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (58th percentile of EPSS-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?
A fix for CVE-2026-44432 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44432 are linked in the Vendor Advisories panel on this page.

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