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ChurchCRM CVE-2026-58411

HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-07-13 GitHub_M
PHP Privilege Escalation XSS Crm
7.0
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.1 MEDIUM

Reflected XSS is network-reachable with no privileges but needs victim interaction (UI:R); script runs in the victim's browser context (S:C) with limited confidentiality/integrity impact and no availability effect.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
A
Scope
X

Lifecycle Timeline

2
Analysis Generated
Jul 13, 2026 - 21:47 vuln.today
CVE Published
Jul 13, 2026 - 21:05 cve.org
HIGH 7.0

DescriptionCVE.org

ChurchCRM is an open-source church management system. Prior to version 7.4.0, Cross-Site Scripting (XSS) vulnerabilities were identified due to insufficient output encoding of user-controlled request parameter names and parameter values. The application reflects attacker-controlled input into JavaScript string contexts and HTML attribute contexts without proper sanitization or contextual output encoding. Affected endpoints observed during testing: /FamilyCustomFieldsEditor.php, /PaddleNumList.php and /admin/system/church-info. Potential consequences include session-token theft, account takeover, unauthorized actions on behalf of authenticated users, exposure of sensitive church member information, credential harvesting, phishing, and privilege escalation when administrators are targeted. This issue has been resolved in version 7.4.0.

AnalysisAI

Reflected Cross-Site Scripting in ChurchCRM before 7.4.0 lets remote attackers inject JavaScript through unsanitized request parameter names and values reflected into JavaScript-string and HTML-attribute contexts on endpoints such as /FamilyCustomFieldsEditor.php, /PaddleNumList.php, and /admin/system/church-info. When a victim (especially an administrator) follows a crafted link, the payload executes in their session, enabling session-token theft, account takeover, and exposure of church member data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malicious URL with XSS payload in parameter
Delivery
Deliver link to authenticated admin via phishing
Exploit
Victim clicks, input reflected without encoding
Execution
Payload executes in admin session context
Persist
Steal session token / hijack session
Impact
Account takeover and access to member data
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Vulnerability AssessmentAI

Exploitation Exploitation requires that a victim with an active ChurchCRM session actively interacts with an attacker-supplied crafted link (UI:A in the CVSS vector), so it is not a fully autonomous remote attack; the attacker needs no prior authentication or privileges (PR:N) but does need to reach a victim and induce the click. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 4.0 base score is 7.0 (High) with vector AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N - network reachable, low complexity, no privileges, but requiring active user interaction, which is the key limiting factor for reflected XSS. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a URL to a vulnerable ChurchCRM endpoint (e.g., /admin/system/church-info) embedding a JavaScript payload in a parameter name or value, then emails it to a church administrator as a plausible link. When the authenticated admin opens it, the reflected script runs in their session context, exfiltrating their session token to the attacker and enabling account takeover. …
Remediation Vendor-released patch: upgrade to ChurchCRM 7.4.0 or later, which resolves the insufficient output encoding, per the advisory at https://github.com/ChurchCRM/CRM/security/advisories/GHSA-p6j6-vrpg-4pp8. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all ChurchCRM deployments running versions before 7.4.0 and notify administrative staff of the vulnerability, instructing them to avoid clicking suspicious links and remain cautious with external communications. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-58411 vulnerability details – vuln.today
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