TI-2023-12169 Aliases CVE-2023-27437 GHSA-5rxf-8qhp-h9fh

WordPress Event Espresso 4 Decaf plugin <= 4.10.44.decaf - Bypass vulnerability

LOW 17CWE-862Published 2024-06-03 · Updated 2026-04-28

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Missing Authorization vulnerability in Event Espresso Event Espresso 4 Decaf allows Functionality Misuse.This issue affects Event Espresso 4 Decaf: from n/a through 4.10.44.Decaf.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00313 24th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Event Espresso	Event Espresso 4 Decaf	up to 4.10.44.decaf	—	No fix listed	CNA

Event Espresso 4 Decaf VendorEvent Espresso Affected up to 4.10.44.decaf Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-27437
2026-10-03 Alias added: GHSA-5rxf-8qhp-h9fh

References

Other 1

https://patchstack.com/database/vulnerability/event-espresso-decaf/wordpress-event-espresso-4-decaf-plugin-4-10-44-decaf-bypass-vulnerability?_s_id=cve

TI-2017-10821 SQL Injection exists in /includes/event-management/index.php in the event-espresso-free… CVSS 3.0CRITICAL 9.8
TI-2017-14751 SQL injection in Event Expresso Free CVSS 3.0HIGH 8.8
TI-2025-41616 WordPress Event Espresso 4 Decaf plugin <= 5.0.37.decaf - Settings Change vulnerability CVSS 3.1MEDIUM 6.5
TI-2020-15988 A cross-site scripting (XSS) vulnerability in… CVSS 3.1MEDIUM 6.1
TI-2024-06383 Missing authorization in Event Espresso – Event Registration & Ticketing Sales CVSS 3.1MEDIUM 4.3
TI-2021-03261 Event Espresso 4 Decaf <= 4.10.11 - Cross-Site Request Forgery Bypass CVSS 3.1MEDIUM 4.3

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences