Common Weakness Enumeration
CWE-804
AllowedGuessable CAPTCHA
Abstraction: Base · Status: Incomplete
The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor.
29 vulnerabilities reference this CWE, most recent first.
CVE-2024-30540 (GCVE-0-2024-30540)
Vulnerability from cvelistv5 – Published: 2024-05-17 08:20 – Updated: 2026-04-28 16:09
VLAI
EPSS
VEX
Title
WordPress VS Contact Form plugin <= 14.7 - Sum Captcha Bypass vulnerability
Summary
Guessable CAPTCHA vulnerability in Guido VS Contact Form allows Functionality Bypass.This issue affects VS Contact Form: from n/a through 14.7.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-17 16:34 UTC
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/vulnerability/ver… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Guido | VS Contact Form |
Affected:
n/a , ≤ 14.7
(custom)
|
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CVE-2024-23567 (GCVE-0-2024-23567)
Vulnerability from cvelistv5 – Published: 2026-07-17 13:28 – Updated: 2026-07-17 13:54
VLAI
EPSS
VEX
Summary
HCL Aftermarket EPC is affected by Sensitive Information in GET method & in URL which allows application to pass sensitive data via URL parameters during normal usage. Data passed in this manner can be exposed because it may end up stored in unintended locations, including server logs, local browser history and proxy logs.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 13:52 UTC
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | Aftermarket EPC |
Affected:
version 1.0.0
|
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CVE-2024-23566 (GCVE-0-2024-23566)
Vulnerability from cvelistv5 – Published: 2026-07-17 13:32 – Updated: 2026-07-17 15:13
VLAI
EPSS
VEX
Summary
HCL Aftermarket EPC is vulnerable to brute force attacks since application doesn’t have captcha implemented. It can lead to various security issues like brute force , automated attacks & account enumeration
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 15:13 UTC
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | Aftermarket EPC |
Affected:
version 1.0.0
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CVE-2023-6963 (GCVE-0-2023-6963)
Vulnerability from cvelistv5 – Published: 2024-02-05 21:22 – Updated: 2026-04-08 17:25
VLAI
EPSS
VEX
Title
Getwid – Gutenberg Blocks <= 2.0.4 - Captcha Bypass
Summary
The Getwid – Gutenberg Blocks plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including, 2.0.4. This makes it possible for unauthenticated attackers to bypass the Captcha Verification of the Contact Form block by omitting 'g-recaptcha-response' from the 'data' array.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-06 16:38 UTC
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jetmonsters | Getwid – Gutenberg Blocks |
Affected:
0 , ≤ 2.0.4
(semver)
|
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CVE-2022-4036 (GCVE-0-2022-4036)
Vulnerability from cvelistv5 – Published: 2022-11-29 20:34 – Updated: 2026-04-08 17:33
VLAI
EPSS
VEX
Title
Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass
Summary
The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.3.72. This is due to the use of insufficiently strong hashing algorithm on the CAPTCHA secret that is also displayed to the user via a cookie.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-23 21:18 UTC
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| codepeople | Appointment Hour Booking – Booking Calendar |
Affected:
0 , ≤ 1.3.72
(semver)
|
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CVE-2022-1801 (GCVE-0-2022-1801)
Vulnerability from cvelistv5 – Published: 2022-06-20 10:25 – Updated: 2024-08-03 00:16
VLAI
EPSS
VEX
Title
Very Simple Contact Form < 11.6 - Captcha bypass
Summary
The Very Simple Contact Form WordPress plugin before 11.6 exposes the solution to the captcha in the rendered contact form, both as hidden input fields and as plain text in the page, making it very easy for bots to bypass the captcha check, rendering the page a likely target for spam bots.
Severity
No CVSS data available.
CWE
- CWE-804 - Guessable CAPTCHA
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a5c97809-2ffc-4e… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Very Simple Contact Form |
Affected:
11.6 , < 11.6
(custom)
|
{
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"url": "https://wpscan.com/vulnerability/a5c97809-2ffc-4efb-8c80-1b734361cd06"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Very Simple Contact Form",
"vendor": "Unknown",
"versions": [
{
"lessThan": "11.6",
"status": "affected",
"version": "11.6",
"versionType": "custom"
}
]
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}
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"problemTypes": [
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"description": "CWE-804 Guessable CAPTCHA",
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"references": [
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],
"url": "https://wpscan.com/vulnerability/a5c97809-2ffc-4efb-8c80-1b734361cd06"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Very Simple Contact Form \u003c 11.6 - Captcha bypass",
"x_generator": "WPScan CVE Generator",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "contact@wpscan.com",
"ID": "CVE-2022-1801",
"STATE": "PUBLIC",
"TITLE": "Very Simple Contact Form \u003c 11.6 - Captcha bypass"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Very Simple Contact Form",
"version": {
"version_data": [
{
"version_affected": "\u003c",
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"version_value": "11.6"
}
]
}
}
]
},
"vendor_name": "Unknown"
}
]
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"credit": [
{
"lang": "eng",
"value": "Sebastian Cruz Cardona"
}
],
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"data_version": "4.0",
"description": {
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}
]
},
"generator": "WPScan CVE Generator",
"problemtype": {
"problemtype_data": [
{
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"value": "CWE-804 Guessable CAPTCHA"
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"references": {
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{
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GHSA-28M7-2RMV-HWQR
Vulnerability from github – Published: 2026-03-05 06:30 – Updated: 2026-03-09 18:31
VLAI
Details
Guessable CAPTCHA vulnerability in jp-secure SiteGuard WP Plugin siteguard allows Functionality Bypass.This issue affects SiteGuard WP Plugin: from n/a through <= 1.7.9.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-27411"
],
"database_specific": {
"cwe_ids": [
"CWE-804"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-05T06:16:29Z",
"severity": "MODERATE"
},
"details": "Guessable CAPTCHA vulnerability in jp-secure SiteGuard WP Plugin siteguard allows Functionality Bypass.This issue affects SiteGuard WP Plugin: from n/a through \u003c= 1.7.9.",
"id": "GHSA-28m7-2rmv-hwqr",
"modified": "2026-03-09T18:31:38Z",
"published": "2026-03-05T06:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27411"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/siteguard/vulnerability/wordpress-siteguard-wp-plugin-plugin-1-7-9-captcha-bypass-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-4639-47CP-327M
Vulnerability from github – Published: 2026-03-10 21:32 – Updated: 2026-03-11 15:31
VLAI
Details
If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is generated with a format that can be automatically recognized for articles, such that an automated script is able to solve this anti-spam mechanism trivially and publish spam comments. The details of captcha challenge are exposed within document body of articles with comments & anti spam-captcha functionalities enabled, including "capcha-letter", "capcha-word" and "capcha-token" which can be used to construct a valid post request to publish a comment. As such, attackers can flood articles with automated spam comments, especially if there are no other web defenses available.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-70129"
],
"database_specific": {
"cwe_ids": [
"CWE-804"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T20:16:20Z",
"severity": "MODERATE"
},
"details": "If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is generated with a format that can be automatically recognized for articles, such that an automated script is able to solve this anti-spam mechanism trivially and publish spam comments. The details of captcha challenge are exposed within document body of articles with comments \u0026 anti spam-captcha functionalities enabled, including \"capcha-letter\", \"capcha-word\" and \"capcha-token\" which can be used to construct a valid post request to publish a comment. As such, attackers can flood articles with automated spam comments, especially if there are no other web defenses available.",
"id": "GHSA-4639-47cp-327m",
"modified": "2026-03-11T15:31:46Z",
"published": "2026-03-10T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-70129"
},
{
"type": "WEB",
"url": "https://github.com/forest4x/vuln-research-public/blob/main/CVE-2025-70129.pdf"
},
{
"type": "WEB",
"url": "https://youtu.be/dD2olE4yMqY"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-5CWM-9HM2-R3CF
Vulnerability from github – Published: 2022-11-29 21:30 – Updated: 2026-04-08 21:31
VLAI
Details
The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.3.72. This is due to the use of insufficiently strong hashing algorithm on the CAPTCHA secret that is also displayed to the user via a cookie.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-4036"
],
"database_specific": {
"cwe_ids": [
"CWE-326",
"CWE-804",
"CWE-863"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-29T21:15:00Z",
"severity": "MODERATE"
},
"details": "The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.3.72. This is due to the use of insufficiently strong hashing algorithm on the CAPTCHA secret that is also displayed to the user via a cookie.",
"id": "GHSA-5cwm-9hm2-r3cf",
"modified": "2026-04-08T21:31:45Z",
"published": "2022-11-29T21:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4036"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2803896%40appointment-hour-booking\u0026new=2803896%40appointment-hour-booking\u0026sfp_email=\u0026sfph_mail="
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f62d28bd-fa33-4f0b-a116-5aacc05bfa3a?source=cve"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/vulnerability-advisories-continued/#CVE-2022-4036"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-5HRC-FRP7-8XRQ
Vulnerability from github – Published: 2026-07-17 15:32 – Updated: 2026-07-17 15:32
VLAI
Details
HCL Aftermarket EPC is affected by Sensitive Information in GET method & in URL which allows application to pass sensitive data via URL parameters during normal usage. Data passed in this manner can be exposed because it may end up stored in unintended locations, including server logs, local browser history and proxy logs.
Severity
4.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-23567"
],
"database_specific": {
"cwe_ids": [
"CWE-804"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-17T14:17:16Z",
"severity": "MODERATE"
},
"details": "HCL Aftermarket EPC is affected by Sensitive Information in GET method \u0026 in URL which allows application to pass sensitive data via URL parameters during normal usage. Data passed in this manner can be exposed because it may end up stored in unintended locations, including server logs, local browser history and proxy logs.",
"id": "GHSA-5hrc-frp7-8xrq",
"modified": "2026-07-17T15:32:30Z",
"published": "2026-07-17T15:32:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-23567"
},
{
"type": "WEB",
"url": "https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0132294"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.