CVE-2026-9375

Rejected duplicate of streaming decompression issue

Published Jun 19, 2026 · Updated Jun 19, 2026

CVE-2026-9375 is rejected and no longer identifies an independent vulnerability affecting urllib3 or any supported version. The withdrawn record had attributed unlimited Brotli streaming decompression in response.py to urllib3 2.6.3, but its CNA removed the description, CWE, CVSS, references, and affected range. Upstream tracks related streaming decompression safeguards under CVE-2026-44432, so CVE-2026-9375 does not represent a separate triage item.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

CVE-2026-9375 is rejected and no longer identifies an independent vulnerability affecting urllib3 or any supported version. The withdrawn record had attributed unlimited Brotli streaming decompression in response.py to urllib3 2.6.3, but its CNA removed the description, CWE, CVSS, references, and affected range. Upstream tracks related streaming decompression safeguards under CVE-2026-44432, so CVE-2026-9375 does not represent a separate triage item.

The record

CVE
CVE-2026-9375
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
urllib3
Product
urllib3
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.7.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

urllib3 · urllib3version=unspecified <2.7.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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