WordPress Event post plugin <= 5.9.8 - Cross Site Scripting (XSS) vulnerability
Priority LOW 29CWE-79Published · Updated
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 Bastien Ho Event post event-post allows Stored XSS.This issue affects Event post: from n/a through <= 5.9.8.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00357 29th 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 |
|---|---|---|---|---|---|
| Bastien Ho | Event post | up to 5.9.8 | — | No fix listed | CNA |
- Event post VendorBastien Ho Affected up to 5.9.8 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-26923
- 2026-10-03 Alias added: GHSA-r9c5-mh6w-wh5v
More Bastien Ho vulnerabilities
- TI-2024-25969 WordPress Event post plugin <= 5.9.5 - Local File Inclusion vulnerability CVSS 3.1HIGH 7.5
- TI-2025-22105 WordPress Accounting for WooCommerce plugin <= 1.6.8 - Local File Inclusion vulnerability CVSS 3.1HIGH 7.5
- TI-2025-17345 WordPress Custom CSS Addons plugin <= 1.9.1 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2026-46656 WordPress Event post plugin <= 6.0.1 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
- TI-2025-18302 WordPress Event post plugin <= 5.9.7 - Stored Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
- TI-2025-38365 WordPress Event post plugin <= 5.10.3 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
Sources
- CVE-2025-26923 · CVE Program
- CVE-2025-26923 · NVD
- FIRST EPSS
- GHSA-r9c5-mh6w-wh5v · GitHub Advisory Database · CC BY 4.0
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