Reflected Cross Site Scripting (XSS) vulnerability in Support Board
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' parameter in '/supportboard/include/articles.php'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
Why it matters now
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
Remediation
- Fix · CNA Support Board (Schiocco) Fixed in 3.7.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4816
- 2026-10-03 Alias added: GHSA-r9fv-65q7-7m5c
References
More Schiocco Support Board vulnerabilities
- TI-2025-04323 Support Board <= 3.8.0 - Unauthenticated Arbitrary File Deletion CVSS 3.1CRITICAL 9.8
- TI-2025-04348 Support Board <= 3.8.0 - Unauthenticated Authorization Bypass due to Use of Default Secret Key CVSS 3.1CRITICAL 9.8
- TI-2026-04199 SQL Injection vulnerability in Support Board CVSS 4.0HIGH 8.7
- TI-2021-07105 Support Board < 3.3.6 - Arbitrary File Deletion via CSRF CVSS 3.1HIGH 8.1
- TI-2021-07089 Support Board < 3.3.5 - Agent+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-4816 · CVE Program
- CVE-2026-4816 · NVD
- FIRST EPSS
- GHSA-r9fv-65q7-7m5c · GitHub Advisory Database · CC BY 4.0
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