CVE-2025-55455 is a vulnerability identified in DooTask version 1.0.51, involving an authenticated arbitrary download flaw through the component /msg/sendtext. This vulnerability allows an authenticated user to download arbitrary files from the server hosting the DooTask application. The flaw resides in the handling of requests to the /msg/sendtext endpoint, which does not properly restrict file access, enabling attackers with valid credentials to retrieve sensitive files beyond their intended scope. Although the exact affected versions are not specified beyond v1.0.51, the vulnerability is confirmed in that release. No public exploits are currently known, and no patches or fixes have been published as of the date of disclosure. The lack of a CVSS score indicates that the vulnerability has not yet been fully assessed for severity, but the ability to download arbitrary files post-authentication suggests a significant risk vector. The vulnerability requires authentication, which limits exposure to some extent but still poses a threat if credentials are compromised or if insider threats exist. The absence of user interaction requirements means exploitation can be automated once access is gained. The vulnerability could lead to unauthorized disclosure of sensitive information, including configuration files, credentials, or other critical data stored on the server, potentially facilitating further attacks or data breaches.

For European organizations using DooTask v1.0.51, this vulnerability could lead to significant confidentiality breaches. Sensitive corporate data, personal data protected under GDPR, or intellectual property could be exposed if attackers exploit this flaw. The arbitrary download capability could also allow attackers to obtain configuration files or credentials that enable lateral movement within the network or privilege escalation. This risk is particularly acute for sectors handling sensitive information such as finance, healthcare, and government institutions. The requirement for authentication reduces the risk from external unauthenticated attackers but does not eliminate it, especially if credential theft or phishing attacks are common. The exposure of personal data could result in regulatory penalties under GDPR, reputational damage, and financial losses. Additionally, the vulnerability could be leveraged as a foothold for more sophisticated attacks, increasing the overall risk posture of affected organizations.

European organizations should implement several targeted mitigations beyond generic patching advice. First, restrict access to the /msg/sendtext endpoint to only trusted and necessary users, applying strict access control policies and network segmentation. Employ multi-factor authentication (MFA) to reduce the risk of credential compromise. Conduct thorough audits of user accounts with access to DooTask and remove or disable unnecessary accounts. Monitor logs for unusual download activity from the /msg/sendtext endpoint to detect potential exploitation attempts. Since no patch is currently available, consider deploying web application firewalls (WAFs) with custom rules to block suspicious requests targeting this endpoint. Additionally, organizations should review and harden file permissions on the server to minimize the impact of arbitrary file downloads. Finally, prepare incident response plans to quickly address any exploitation attempts and conduct regular security awareness training to reduce the risk of credential theft.