CVE-2022-44593Network attack vector

HTTP denial of service via spoofed headers

Published Jun 21, 2024 · Updated Apr 28, 2026

IP address spoofing in SolidWP Solid Security 9.3.1 and earlier allows remote attackers to interrupt HTTP service through forged proxy headers. The Automatic (Insecure) IP-detection mode accepts client-supplied proxy headers in a predetermined order without verifying that a trusted proxy set them. The mode must be enabled; spoofed addresses bypass IP-based bans and lockouts, allowing abusive request traffic to continue unchecked.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IP address spoofing in SolidWP Solid Security 9.3.1 and earlier allows remote attackers to interrupt HTTP service through forged proxy headers. The Automatic (Insecure) IP-detection mode accepts client-supplied proxy headers in a predetermined order without verifying that a trusted proxy set them. The mode must be enabled; spoofed addresses bypass IP-based bans and lockouts, allowing abusive request traffic to continue unchecked.

The record

CVE
CVE-2022-44593
Published
Jun 21, 2024
Updated
Apr 28, 2026
Vendor
SolidWP
Product
Solid Security
Classifications
CWE-345, CWE-348, CAPEC-469, T1562.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=9.3.1 changes=[{"at":"9.3.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SolidWP · Solid Securityversion=n/a <=9.3.1 changes=[{"at":"9.3.2","status":"unaffected"}]

Published CVSS scores

3.7PatchstackCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
CWE-348Use of Less Trusted Source
CAPEC-469HTTP DoS
T1562.001Impair Defenses: Disable or Modify Tools

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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