CVE-2026-10552 (GCVE-0-2026-10552)
Vulnerability from cvelistv5 – Published: 2026-06-24 05:33 – Updated: 2026-06-24 05:33
VLAI
Title
Blue Captcha <= 2.0.1 - Cross-Site Request Forgery via 'blcap_action' Parameter
Summary
The Blue Captcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to and including 2.0.1. This is due to missing or incorrect nonce validation on the main admin panel (blcap_main_page) and on the Hall of Shame and Log subpages, which accept a 'blcap_action' / 'action' parameter from $_REQUEST and perform destructive operations (plugin uninstall via blcap_uninstall(), log deletion via blcap_delete_logs(), Hall of Shame deletion via blcap_delete_ip_db(), and adding IPs to the banned list via update_option('blcap_settings')) with no wp_verify_nonce(), check_admin_referer(), or check_ajax_referer() calls anywhere in the codebase. This makes it possible for unauthenticated attackers to uninstall the plugin, delete audit logs, remove Hall of Shame entries, and add arbitrary IP addresses to the block list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Severity
4.3 (Medium)
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jotis | Blue Captcha |
Affected:
0 , ≤ 2.0.1
(semver)
|
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Blue Captcha",
"vendor": "jotis",
"versions": [
{
"lessThanOrEqual": "2.0.1",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Kamil Kr\u00f3likowski"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Blue Captcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to and including 2.0.1. This is due to missing or incorrect nonce validation on the main admin panel (blcap_main_page) and on the Hall of Shame and Log subpages, which accept a \u0027blcap_action\u0027 / \u0027action\u0027 parameter from $_REQUEST and perform destructive operations (plugin uninstall via blcap_uninstall(), log deletion via blcap_delete_logs(), Hall of Shame deletion via blcap_delete_ip_db(), and adding IPs to the banned list via update_option(\u0027blcap_settings\u0027)) with no wp_verify_nonce(), check_admin_referer(), or check_ajax_referer() calls anywhere in the codebase. This makes it possible for unauthenticated attackers to uninstall the plugin, delete audit logs, remove Hall of Shame entries, and add arbitrary IP addresses to the block list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-352",
"description": "CWE-352 Cross-Site Request Forgery (CSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-24T05:33:26.283Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/793072e9-250b-4a2c-819f-aa7e1dc7d4d6?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/blue-captcha/tags/2.0.1/bluecaptcha.php#L221"
},
{
"url": "https://plugins.trac.wordpress.org/browser/blue-captcha/tags/2.0.1/bluecaptcha.php#L220"
},
{
"url": "https://plugins.trac.wordpress.org/browser/blue-captcha/tags/2.0.1/bluehos.php#L51"
},
{
"url": "https://plugins.trac.wordpress.org/browser/blue-captcha/tags/2.0.1/bluehos.php#L91"
},
{
"url": "https://plugins.trac.wordpress.org/browser/blue-captcha/tags/2.0.1/bluelog.php#L62"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-23T16:41:19.000Z",
"value": "Disclosed"
}
],
"title": "Blue Captcha \u003c= 2.0.1 - Cross-Site Request Forgery via \u0027blcap_action\u0027 Parameter"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-10552",
"datePublished": "2026-06-24T05:33:26.283Z",
"dateReserved": "2026-06-01T13:52:47.971Z",
"dateUpdated": "2026-06-24T05:33:26.283Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-10552",
"date": "2026-06-24",
"epss": "0.00146",
"percentile": "0.0419"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…