CVE-2026-89242 WWBN CVE debrief

Who should care

Defenders responsible for AVideo installations, security teams, and administrators should assess exposure and implement compensating controls. AVideo installations, security teams, and administrators should prioritize verifying exposure and implementing compensating controls. The vulnerability allows unauthenticated attackers to read local files or access internal services, and defenders should verify exposure and implement compensating controls.

Why it matters

CVE-2026-89242 is a server-side request forgery vulnerability in AVideo that allows unauthenticated attackers to read local files or access internal services. Defenders should prioritize verifying exposure, implementing compensating controls, and remediating with patches or updates. Evidence is limited, and verification of vendor remediation and affected versions is required.

• Read local files or access internal services without authentication
• Potential data breaches or unauthorized access to sensitive information
• Possible disruption of internal services or systems
• Verification of vendor remediation and affected versions is required

Technical summary

The _json_decode function in AVideo fetches remote URLs and local file paths without SSRF validation, allowing unauthenticated attackers to POST file paths or HTTP URLs to login.json.php to read local files or access internal services. The vulnerability exists in the AVideo software, and defenders should prioritize verifying exposure and implementing compensating controls. The CVE record and NVD entry provide details on the vulnerability, but vendor remediation and affected versions require verification. AVideo installations, security teams, and administrators should assess exposure and implement compensating controls.

Defensive priority

Defenders should prioritize verifying exposure and implementing compensating controls.

Recommended defensive actions

• Verify exposure by checking for AVideo installations and assessing access to login.json.php
• Implement compensating controls, such as restricting access to login.json.php and monitoring for suspicious activity
• Remediate by applying patches or updates, if available, and validating SSRF validation
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• 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 NVD entry provide details on the vulnerability, but vendor remediation and affected versions require verification. Evidence is limited, and defenders should verify exposure and implement compensating controls. The vulnerability allows unauthenticated attackers to read local files or access internal services. AVideo installations, security teams, and administrators should assess exposure and implement compensating controls. Verification of vendor remediation and affected versions is required.

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.