TI-2023-26838 Aliases CVE-2023-49179 GHSA-9wp4-f6mp-cqfw

WordPress Event post Plugin <= 5.8.6 is vulnerable to Cross Site Scripting (XSS)

LOW 29CWE-79Published 2023-12-15 · Updated 2026-04-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in N.O.U.S. Open Useful and Simple Event post allows Stored XSS.This issue affects Event post: from n/a through 5.8.6.

Why it matters now

EPSS 0.00377 31st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
N.O.U.S. Open Useful and Simple	Event post	up to 5.8.6	—	No fix listed	CNA

Event post VendorN.O.U.S. Open Useful and Simple Affected up to 5.8.6 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:avecnous:event_post::::::wordpress::*	up to 5.8.6	Vulnerable	Avecnous

cpe:2.3:a:avecnous:event_post:*:*:*:*:*:wordpress:*:* Versions up to 5.8.6 Vulnerable ·Avecnous

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-49179
2026-10-03 Alias added: GHSA-9wp4-f6mp-cqfw

References

Advisory 1

https://patchstack.com/database/vulnerability/event-post/wordpress-event-post-plugin-5-8-6-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2025-28980 WordPress Event post plugin <= 5.9.11 - Cross Site Scripting (XSS) Vulnerability CVSS 3.1MEDIUM 6.5
TI-2024-09446 Event Post <= 5.9.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via events_cal Shortcode CVSS 3.1MEDIUM 6.4
TI-2024-01283 Event post <= 5.9.4 - Missing Authorization CVSS 3.1MEDIUM 4.3

Sources

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