Better Messages <= 3.0.4 — Authenticated (Subscriber+) Stored DOM-Based Cross-Site Scripting via User Display Name
CVE-2026-94376Published · Updated Action summary
Affected: ≤3.0.4Update to 3.0.5 or newer
All remediation steps- Severity
- Medium6.4
- CVSS
- 6.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots bp-better-messages
- Affected≤ 3.0.4
- Patched in3.0.5
Update to 3.0.5 or newer.
You are affected if you run ≤ 3.0.4. Version 3.0.5 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.0.5, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Adrien Brunner.
The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via User Display Name in all versions up to, and including, 3.0.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable by Subscriber-level users because WordPress core's sanitize_text_field() preserves HTML-entity-encoded payloads (e.g., an iframe srcdoc attribute), allowing the encoded string to be stored as a display name without requiring the unfiltered_html capability, and the plugin subsequently decodes it server-side before rendering.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
All 27| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤3.2.1Update to 3.2.2 | CVE-2026-124257 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.1.3Update to 3.1.4 | CVE-2026-114179 | |
| Medium6.5 | Authenticated (Subscriber+) SQL Injection via 'group_id' Message Meta Parameter ≤3.0.4Update to 3.0.5 | CVE-2026-93899 | |
| Medium5.3 | Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register ≤2.15.33Update to 3.0.0 | CVE-2026-89093 | |
| Medium6.5 | Missing Authorization to Authenticated (Custom+) Chat-Room Transcript Disclosure via '/thread/<id>' REST Endpoint ≤2.15.33Update to 3.0.0 | CVE-2026-89334 |
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤3.2.1Update to 3.2.2
- High7.2Unauthenticated Stored Cross-Site Scripting
≤3.1.3Update to 3.1.4
- Medium6.5Authenticated (Subscriber+) SQL Injection via 'group_id' Message Meta Parameter
≤3.0.4Update to 3.0.5
- Medium5.3Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register
≤2.15.33Update to 3.0.0
- Medium6.5Missing Authorization to Authenticated (Custom+) Chat-Room Transcript Disclosure via '/thread/<id>' REST Endpoint
≤2.15.33Update to 3.0.0
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 6.4
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.