CVE-2022-0879Public exploitNetwork attack vector

Reflected XSS via unescaped cf-api parameter

Published Apr 18, 2022 · Updated Aug 2, 2024

Reflected cross-site scripting in Caldera Forms before 1.9.7 allows remote attackers to execute script through the cf-api parameter. The plugin reflects that query value into the HTTP response without validation or escaping when no forms exist, allowing a victim browser to run attacker-supplied code after visiting a crafted URL. Exploitation requires victim interaction with the crafted link; the documented impact is script execution in the site context, not server-side code execution.

CVSS severity6.1
Medium
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected cross-site scripting in Caldera Forms before 1.9.7 allows remote attackers to execute script through the cf-api parameter. The plugin reflects that query value into the HTTP response without validation or escaping when no forms exist, allowing a victim browser to run attacker-supplied code after visiting a crafted URL. Exploitation requires victim interaction with the crafted link; the documented impact is script execution in the site context, not server-side code execution.

The record

CVE
CVE-2022-0879
Published
Apr 18, 2022
Updated
Aug 2, 2024
Vendor
CalderaWP
Product
Caldera Forms
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 18, 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=1.9.7 <1.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CalderaWP · Caldera Formsversion=1.9.7 <1.9.7

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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