CVE-2022-42494Network attack vector

Admin SSRF via missing nonce and hostname validation

Published Nov 8, 2022 · Updated Apr 28, 2026

Server-Side Request Forgery in All in One SEO Pro 4.2.5.1 and earlier allows remote authenticated users to query internal services. The plugin accepts administrator-triggered web requests without nonce checks or hostname validation, letting requests originate from the WordPress server toward arbitrary domains. Administrative privileges are required, and the reachable impact is querying or modifying information exposed by internal services.

CVSS severity6.5
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-Side Request Forgery in All in One SEO Pro 4.2.5.1 and earlier allows remote authenticated users to query internal services. The plugin accepts administrator-triggered web requests without nonce checks or hostname validation, letting requests originate from the WordPress server toward arbitrary domains. Administrative privileges are required, and the reachable impact is querying or modifying information exposed by internal services.

The record

CVE
CVE-2022-42494
Published
Nov 8, 2022
Updated
Apr 28, 2026
Vendor
Semper Plugins, LLC
Product
All in One SEO Pro
Classifications
CWE-918, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 8, 2022CVE 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=<= 4.2.5.1 <=4.2.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Semper Plugins, LLC · All in One SEO Proversion=<= 4.2.5.1 <=4.2.5.1

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
3.0PatchstackCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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