CVE-2025-69414 is an authorization vulnerability classified under CWE-863 affecting Plex Media Server up to version 1.42.2.10156. The flaw allows an attacker possessing a transient access token to retrieve a permanent access token by making a request to the /myplex/account endpoint. Permanent access tokens provide long-term authenticated access to user accounts, enabling attackers to bypass normal authentication flows and gain persistent access. The vulnerability arises from insufficient authorization checks on the API endpoint, permitting escalation from a limited transient token to a permanent token without proper validation. The CVSS 3.1 base score of 8.5 reflects the network attack vector (AV:N), low attack complexity (AC:L), requirement for privileges (PR:L), no user interaction (UI:N), and a scope change (S:C) indicating that the vulnerability affects resources beyond the initially compromised component. The impact on confidentiality is high as attackers can access sensitive user data, while integrity impact is low and availability is unaffected. No known exploits have been observed in the wild, but the vulnerability presents a significant risk due to the ease of exploitation and the sensitive nature of the tokens involved. The vulnerability affects all versions up to 1.42.2.10156, and no official patches have been linked yet, indicating the need for immediate attention from administrators.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of user data stored or accessible via Plex Media Server. Unauthorized access to permanent tokens can lead to account takeover, exposure of personal media libraries, and potential lateral movement within networks if Plex is integrated with other services. Media companies, educational institutions, and enterprises using Plex for internal content distribution are at risk of data leakage and privacy violations. The vulnerability could also undermine trust in media services and lead to regulatory compliance issues under GDPR due to unauthorized data access. Since the attack requires only a transient token, which may be easier to obtain, the attack surface is broad. The lack of user interaction and network-based exploitability means attackers can automate attacks remotely, increasing the likelihood of exploitation. The impact on integrity is limited, but the confidentiality breach alone is critical. Availability is not impacted, so service disruption is unlikely, but the risk of persistent unauthorized access remains high.

European organizations should immediately audit their Plex Media Server deployments and restrict access to the /myplex/account endpoint using network-level controls such as firewalls or reverse proxies to limit exposure to trusted IPs only. Implement strict monitoring and alerting for unusual token retrieval patterns or repeated API calls that could indicate exploitation attempts. Since no official patches are currently available, consider disabling remote access to Plex Media Server or enforcing multi-factor authentication (MFA) where possible to reduce the risk of token compromise. Review and rotate all permanent access tokens after mitigation measures are in place. Organizations should also stay updated with Plex vendor advisories for forthcoming patches and apply them promptly. Additionally, isolate Plex servers in segmented network zones to prevent lateral movement if compromise occurs. Employ endpoint detection and response (EDR) tools to detect anomalous behavior related to token usage. Finally, educate users about the risks and encourage strong password policies to reduce the likelihood of initial token acquisition.