CVE-2026-26227 VideoLAN CVE debrief

Who should care

Users of VideoLAN VLC for Android versions prior to 3.7.0 should update to the latest version to mitigate the authentication bypass vulnerability in the Remote Access Server feature. This vulnerability allows an attacker with network reachability to the server to gain unauthorized access to the Remote Access interface. Affected operators, platforms, and security teams should review and implement compensating controls while remediation is scheduled.

Technical summary

VideoLAN VLC for Android prior to version 3.7.0 contains an authentication bypass in the Remote Access Server feature due to missing or insufficient rate limiting on one-time password (OTP) verification. The Remote Access Server uses a 4-digit OTP and does not enforce effective throttling or lockout within the OTP validity window, allowing an attacker with network reachability to the server to repeatedly attempt OTP verification until a valid user_session cookie is issued. Successful exploitation results in unauthorized access to the Remote Access interface, limited to media files explicitly shared by the VLC for Android user.

Defensive priority

Medium priority given the CVSS score of 6.3 and the potential for unauthorized access to the Remote Access interface.

Recommended defensive actions

• Update to VLC for Android version 3.7.0 or later
• Implement additional security measures such as IP blocking or rate limiting on the Remote Access Server
• Monitor for suspicious activity on the Remote Access interface
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail provide information on the vulnerability, but further analysis is needed to fully understand the impact and potential mitigations. The Remote Access Server feature in VideoLAN VLC for Android prior to version 3.7.0 uses a 4-digit OTP and does not enforce effective throttling or lockout within the OTP validity window. This allows an attacker with network reachability to the server to repeatedly attempt OTP verification until a valid user_session cookie is issued. Evidence is limited to CVE and NVD details, and defenders should verify affected scope and vendor guidance.

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.