Joinchat 6.3.2 - 6.4.1 - Author+ Stored XSS via Button Block Message Attribute
CVSS score
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EPSS probability
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Risk score
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Published
2 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%63
Short explanation
In Joinchat WordPress plugin versions 6.3.2‑6.4.1, the button block message is output into an HTML attribute without escaping; users with the Author role or higher can inject stored XSS and affect any visitor, including administrators.
Stored XSS can lead to session theft and privilege escalation to administrator rights, posing serious security risks.
What should be done?
- Upgrade to version 6.4.2 or later
- Apply vendor‑released patch if available
- Add proper escaping for button block messages
- Restrict Author capabilities
- Monitor site for malicious scripts
Chain of evidence and sources
Joinchat eklentisinin 6.3.2‑6.4.1 sürümlerinde, buton bloğu mesajı kaçırılmadığı için Author rolündeki kullanıcılar depolanmış XSS istismarı yapabilir.
Bu güvenlik açığı için resmi yama durumu doğrulanamadı; yama durumu UNKNOWN olarak rapor edilmiştir.
Show the technical text from the sources
The Joinchat WordPress plugin before 6.4.2 does not escape the message of its button block before outputting it in an HTML attribute on the front end, which could allow users with the Author role and above to perform Stored Cross-Site Scripting attacks against any visitor of the post, including administrators.
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-118071 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Unknown | Joinchat | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-118071 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-118071 weaknesses.
Official Sources and Advisories
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