In Spring Framework versions 6.0.x as of 6.0.5 and versions 6.1.x and 6.2.x, an application is vulnerable to a reflected file download (RFD) attack when it sets a “Content-Disposition” header with a non-ASCII charset. The filename attribute can be derived from user-supplied input, making it susceptible to exploitation.
The severity level of this vulnerability is classified as medium with a CVSS score of 6.5. This indicates that while the vulnerability poses a risk, it may not be as critical as high-severity vulnerabilities. However, risk to organizations includes potential unauthorized file downloads which could lead to further exploitation.
Currently, there are no known public exploits for this vulnerability. Nevertheless, organizations should prioritize patching immediately, especially if they are running the affected versions in production environments.
To mitigate the risks posed by this vulnerability, users should upgrade to fixed versions: 6.2.8 for 6.2.x, 6.1.21 for 6.1.x, and 6.0.29 for 6.0.x. Implementing these updates will help secure applications against RFD attacks.
In summary, while CVE-2025-41234 presents a medium risk, it remains essential for security teams to address this vulnerability to maintain the integrity and security of their applications.
Vulnerability Details
The vulnerability allows an attacker to exploit the application by leveraging crafted input that triggers the reflected file download functionality. This occurs specifically when the application sets the “Content-Disposition” header improperly, enabling an attacker to manipulate the filename attribute.
The affected Spring Framework versions include 6.2.0 to 6.2.7, 6.1.0 to 6.1.20, and 6.0.5 to 6.0.28. Organizations using older, unsupported versions are not affected by this vulnerability.
The official CVE description details the conditions under which an application becomes vulnerable, emphasizing the need for proper input sanitation and safe header handling.
Technical Analysis
The root cause of this vulnerability stems from the handling of the “Content-Disposition” header in the Spring Framework. If the filename is derived from user input without proper sanitation, attackers can inject malicious content into the response, risking unauthorized access to files.
The attack vector is network-based, requiring low privileges and user interaction. The attack complexity is categorized as high, and the potential impact on confidentiality is significant, while the integrity impact is low, and availability is not affected.
Risk & Impact Analysis
Organizations utilizing the affected versions of Spring Framework may face risks including unauthorized file downloads, which could lead to further exploitation, data leakage, or disruption of services. Given the medium severity of this vulnerability, addressing it in the priority patch cycle is critical to ensure application security.
The potential blast radius is significant since applications may be widely deployed across various networks, increasing the likelihood of exploitation if left unaddressed. Organizations should assess their usage of the affected versions and prioritize remediation measures.
With a CVSS score of 6.5, organizations should focus on timely remediation to reduce their risk exposure. Patching should be emphasized, along with ongoing monitoring for any user input sanitization failures.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the Spring Framework include 6.2.0 through 6.2.7, 6.1.0 through 6.1.20, and 6.0.5 through 6.0.28. Users should upgrade to the respective fixed versions: 6.2.8 for 6.2.x, 6.1.21 for 6.1.x, and 6.0.29 for 6.0.x to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to the following fixed versions: 6.2.8 for 6.2.x, 6.1.21 for 6.1.x, and 6.0.29 for 6.0.x.
Additional mitigation measures include implementing proper input validation and sanitization mechanisms, ensuring that user-supplied input does not get directly reflected in response headers without appropriate checks.
Detection Guidance
Organizations should monitor application logs for unusual patterns or anomalies related to file downloads. Detection mechanisms should focus on identifying any instances where user input is reflected in response headers, particularly within the “Content-Disposition” header.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-41234 lies in its demonstration of the risks associated with improper handling of response headers in web applications. Security teams should learn from this incident to enhance their secure coding practices, focusing on input validation and sanitation.
This vulnerability also highlights a pattern where reflected file download vulnerabilities can lead to serious consequences if not promptly addressed. Organizations should regularly review their security posture and implement robust security measures to prevent similar issues.
Security teams are encouraged to adopt a proactive approach to vulnerability management by integrating continuous security assessments into their development processes. This includes leveraging resources such as application security assessments to identify potential weaknesses early in the development lifecycle.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)