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CVE-2021-20220

MEDIUM
4.8
CVSS Score
Published: February 23, 2021 at 05:21 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
3 products affected across 2 vendorsActive IQ Unified ManagerOnCommand Workflow AutomationUndertow

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Severity
MEDIUM4.8
Exploit prediction
EPSS 1%

Description

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Active IQ Unified Manager· NetAppnpm
95%
All versions
OnCommand Workflow Automation· NetApp
95%
All versions
Undertow· Red Hat
95%
v < 2.0.342.1.0 ≤ v < 2.1.62.0.34.Final2.1.6.Final2.2.0.Final
Affected range stops below 2.0.34, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.1.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1923133
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220210-0013/

CVSS

4.8MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-444

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