CVE-2026-107799 banq CVE debrief

Who should care

Defenders responsible for Jivejdon deployments, especially those using version 5.0 or earlier, should assess exposure and prioritize verification and remediation efforts. Roles include system administrators, security teams, and developers maintaining Jivejdon installations.

Why it matters

CVE-2026-107799 is a stored XSS vulnerability in Jivejdon through 5.0, allowing authenticated attackers to inject script by posting unsanitized forum message bodies. Defenders should prioritize verifying exposure, assessing impact, and implementing input validation and output encoding for message bodies.

• Script execution in user browsers viewing affected threads
• Potential for authenticated attackers to inject malicious script
• Risk of compromised user sessions or unauthorized actions
• Need for input validation and output encoding in message bodies

Technical summary

The vulnerability exists in Jivejdon through version 5.0 due to the lack of input sanitization in messageListBody.jsp. Authenticated attackers can inject script by posting unsanitized forum message bodies, which are then rendered with filter set to false and non-escaping default filters. This leads to script execution in the browsers of users viewing the thread. Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially if they use Jivejdon version 5.0 or earlier. The CVE record and source item provide details about the vulnerability, including its existence in Jivejdon through version 5.0 and the lack of input sanitization in messageListBody.jsp.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially if they use Jivejdon version 5.0 or earlier.

Recommended defensive actions

• Verify Jivejdon version and exposure
• Assess user interaction with forum message threads
• Implement input validation and output encoding for message bodies
• Monitor for suspicious script injection attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details about the vulnerability, including its existence in Jivejdon through version 5.0 and the lack of input sanitization in messageListBody.jsp. However, information about exploitation, victim impact, and remediation is limited.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.