CVE-2021-42358Network attack vector

Reflected script injection via missing nonce validation

Published Nov 29, 2021 · Updated Feb 13, 2025

Cross-site request forgery in Teqlog Contact Form With Captcha 1.6.2 and earlier allows remote attackers to inject web scripts. The contact-form submission path in cfwc-form.php accepts forged requests without validating a WordPress nonce and processes attacker-controlled form input for reflected output. Exploitation requires user interaction with an attacker-controlled request, and script execution occurs in the affected site's browser context.

CVSS severity8.8
High
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

Cross-site request forgery in Teqlog Contact Form With Captcha 1.6.2 and earlier allows remote attackers to inject web scripts. The contact-form submission path in cfwc-form.php accepts forged requests without validating a WordPress nonce and processes attacker-controlled form input for reflected output. Exploitation requires user interaction with an attacker-controlled request, and script execution occurs in the affected site's browser context.

The record

CVE
CVE-2021-42358
Published
Nov 29, 2021
Updated
Feb 13, 2025
Vendor
Teqlog
Product
Contact Form With Captcha
Classifications
CWE-352, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=1.6.2 <=1.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Teqlog · Contact Form With Captchaversion=1.6.2 <=1.6.2

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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-352Cross-Site Request Forgery (CSRF)
T1203Exploitation for Client Execution

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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