CVE-2022-0591Public exploitNetwork attack vector

Unauthenticated SSRF via unvalidated AJAX URL

Published Mar 21, 2022 · Updated Aug 2, 2024

Server-side request forgery in Subtle Web Inc FormCraft before 3.8.28 allows remote attackers to make server-side requests via AJAX. The formcraft3_get AJAX action passes the unvalidated URL parameter to a server-side fetch, permitting requests to attacker-chosen or loopback destinations. No authentication is required; reachable WordPress sites can be induced to access internal HTTP services, with response exposure depending on endpoint behavior.

CVSS severity9.1
Critical
EPSS probability20.25%
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 Subtle Web Inc FormCraft before 3.8.28 allows remote attackers to make server-side requests via AJAX. The formcraft3_get AJAX action passes the unvalidated URL parameter to a server-side fetch, permitting requests to attacker-chosen or loopback destinations. No authentication is required; reachable WordPress sites can be induced to access internal HTTP services, with response exposure depending on endpoint behavior.

The record

CVE
CVE-2022-0591
Published
Mar 21, 2022
Updated
Aug 2, 2024
Vendor
Subtle Web Inc
Product
FormCraft
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=3.8.28 <3.8.28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Subtle Web Inc · FormCraftversion=3.8.28 <3.8.28

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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