Home/CVE/ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the User Editor (UserEditor.php) rende
CVE
CVE-2026-40593
ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the User Editor (UserEditor.php) rende
ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the User Editor (UserEditor.php) renders stored usernames directly into an HTML input value attribute without applying htmlspecialchars(). An administrator can save a username containing HTML attribute-breaking characters and event handlers, which execute in the browser of any administrator who subsequently views that user's editor page, resulting in stored XSS.
This issue has been fixed in version 7.2.0.
MEDIUM · CVSS 4.8
EPSS 0.0001
EPSS exploitation odds0.01% · top 98%
Monitor
- No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
No Sigma yet — build one →
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2026-40593, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
EPSS exploitation probability
0.01%
Top 98%odds of exploitation in the next 30 days
CVSS metric silhouette
shape grows toward worst-case
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Tech impact
partial
CVSS vector breakdown
Exploitability - how they get in
Attack Vector
Network
Adjacent
Local
Physical
Attack Complexity
Low
High
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Impact - what breaks
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
VECTOR
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NLifecycle
- 18 Apr 2026Published to NVD
- 20 Apr 2026Last modified
Every entry is a recorded date - NVD publish/modify, CISA KEV add, public exploit disclosure. No inferred events.
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ATT&CK techniques
2Techniques this CVE enables - linked via CWE → CAPEC → ATT&CK. Pills with a solid outline are named directly in ATT&CK or Nuclei templates (high confidence); the others are linked through weakness mappings.
▤ Build a SIEM detection for these techniques▤
CAPEC attack patterns
9Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
CAPEC-CAPEC-104 · Cross Zone Scripting CAPEC-CAPEC-209 · XSS Using MIME Type Mismatch CAPEC-CAPEC-588 · DOM-Based XSS CAPEC-CAPEC-591 · Reflected XSS CAPEC-CAPEC-592 · Stored XSS CAPEC-CAPEC-63 · Cross-Site Scripting (XSS) CAPEC-CAPEC-73 · User-Controlled Filename CAPEC-CAPEC-81 · Web Server Logs Tampering CAPEC-CAPEC-85 · AJAX Footprinting
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Weakness Classification
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Related CVEs
8CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row. Not a guess.
CVE-2009-4267
The console in Apache jUDDI 3.0.0 does not properly escape line feeds, which all...
same CWE-116
MEDIUM
CVE-2013-4547
nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to byp...
same CWE-116
CVE-2013-2011
WordPress W3 Super Cache Plugin before 1.3.2 contains a PHP code-execution vulne...
same CWE-116
HIGH
CVE-2014-9938
contrib/completion/git-prompt.sh in Git before 1.9.3 does not sanitize branch na...
same CWE-116
HIGH
CVE-2000-1205
Cross site scripting vulnerabilities in Apache 1.3.0 through 1.3.11 allow remote...
same CWE-79
CVE-2002-0270
Opera, when configured with the "Determine action by MIME type" option disabled,...
same CWE-79
CVE-2002-1651
Cross-site scripting (XSS) vulnerability in Verity Search97 allows remote attack...
same CWE-79
CVE-2002-1700
Cross-site scripting vulnerability (XSS) in the missing template handler in Macr...
same CWE-79
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References & Sources
1Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.