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CVE-2026-75953— Joomla Extension - cmsjunkie.com - Open mail relay in J-BusinessDirectory < 6.2.3

Quick assessment

Affected
cmsjunkie.com J-BusinessDirectory extension for Joomla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla 扩展程序 - cmsjunkie.com - J-BusinessDirectory 版本低于 6.2.3 中存在开放邮件中继漏洞 - 收件人地址从请求参数（contact_id_offer / contact_id_event）中获取，而不是从服务器端的报价/事件记录中获取，因此攻击者可以将邮件发送到任意地址。

AI Predicted 5.3 Difficulty: Easy EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1534 · Internal Spearphishing

Affected Version Matrix 1

VendorProduct Version RangeStatus
cmsjunkie.com J-BusinessDirectory extension for Joomla 1.0.0-6.2.2 affected
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I. Basic Information for CVE-2026-75953

Vulnerability Information
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Vulnerability Title
Joomla Extension - cmsjunkie.com - Open mail relay in J-BusinessDirectory < 6.2.3
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - cmsjunkie.com - Open mail relay in J-BusinessDirectory < 6.2.3 - Recipient address was taken from the request (contact_id_offer / contact_id_event) instead of the server-side offer/event record, so mail could be sent to an arbitrary address.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过发送数据的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cmsjunkie.com J-BusinessDirectory extension for Joomla 1.0.0-6.2.2 -

II. Public POCs for CVE-2026-75953

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-75953

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Security Blog Posts for CVE-2026-75953 (1)

Same Patch Batch · cmsjunkie.com · 2026-08-19 · 8 CVEs total

CVE-2026-75949 10.0 CRITICAL Joomla Extension - cmsjunkie.com - Arbitrary file upload / deletion (path traversal) in J
CVE-2026-75954 9.3 CRITICAL Joomla Extension - cmsjunkie.com - SQL injection in trips search in J-BusinessDirectory <
CVE-2026-75956 8.7 HIGH Joomla Extension - cmsjunkie.com - DOS vector in pagination parameter handling in J-Busine
CVE-2026-75951 6.9 MEDIUM Joomla Extension - cmsjunkie.com - Insecure Direct Object Reference (multiple frontend/AP
CVE-2026-75950 6.9 MEDIUM Joomla Extension - cmsjunkie.com - Unauthenticated listing ownership takeover in J-Busines
CVE-2026-75955 5.1 MEDIUM Joomla Extension - cmsjunkie.com - Reflected XSS / XML injection in J-BusinessDirectory <
CVE-2026-75952 4.6 MEDIUM Joomla Extension - cmsjunkie.com - Cross-site request forgery in J-BusinessDirectory < 6.

IV. Related Vulnerabilities

Same product: J-BusinessDirectory extension for Joomla
Same vendor: cmsjunkie.com
Same weakness: CWE-201

V. Comments for CVE-2026-75953

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