A security flaw has been discovered in JeecgBoot up to 3.9.1. This vulnerability allows for server-side request forgery (SSRF) through the function CommonController.uploadImgByHttp/HttpFileToMultipartFileUtil.httpFileToMultipartFile/HttpFileToMultipartFileUtil.downloadImageData of the file CommonController.java. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Upgrading the affected component is recommended.
This vulnerability has a CVSS score of 2.1, indicating a low severity level. Organizations should assess their exposure to this vulnerability and take necessary actions to mitigate the risks.
Risk to organizations includes potential unauthorized access to internal resources through SSRF. Although the CVSS score suggests low severity, the ability to initiate an attack remotely highlights the importance of addressing this vulnerability promptly.
Organizations should prioritize patching immediately to prevent exploitation of this vulnerability, given the public availability of the exploit.
Vulnerability Details
The vulnerability in JeecgBoot up to version 3.9.1 affects the CommonController.uploadImgByHttp function. The vulnerability is classified under CWE-918, which indicates a server-side request forgery issue. This could lead to unintended actions being executed on behalf of the user without their knowledge.
The CVSS 3.1 score is 6.3, classifying it as medium severity, indicating that it requires low privileges for exploitation and does not require user interaction. The publication date of this vulnerability is May 2, 2026.
Technical Analysis
The root cause of this vulnerability lies in improper validation of user inputs in the uploadImgByHttp function. Attackers may leverage this weakness to manipulate requests sent to the server, potentially accessing sensitive internal resources.
The attack vector for this vulnerability is network-based, and the attack complexity is low, as it requires minimal effort to exploit. The attacker must have low privileges to perform this action, and no user interaction is required. The impacts on confidentiality, integrity, and availability are all rated as low.
Risk & Impact Analysis
Real-world deployment risk associated with this vulnerability is notable, as it potentially allows attackers to issue unauthorized requests to internal servers. The blast radius includes any systems that may process requests from the vulnerable component.
Organizations must consider the medium severity rating, which indicates that while immediate exploitation might not be critical, it still poses a significant risk that should be addressed in the priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of JeecgBoot prior to 3.9.2 are affected by this vulnerability. Organizations using affected versions should plan to upgrade to the latest version as soon as possible.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade the JeecgBoot software to version 3.9.2 or later. If immediate upgrade is not feasible, implementing network controls to restrict access to the vulnerable endpoint is recommended.
Monitoring for unauthorized access to the affected components and implementing logging to capture suspicious activity can also help in detecting potential exploitation attempts.
For organizations interested in assessing the security posture of their applications, consider utilizing penetration testing services to identify vulnerabilities.
Detection Guidance
Organizations should monitor logs for unexpected access patterns, especially to the uploadImgByHttp endpoint. Any anomalies in network traffic that appear to be targeting this function should be investigated promptly.
Behavioral anomalies such as unusual request patterns or unexpected data submissions should also be flagged for further analysis.
AppSecure Threat Intelligence Insight
The presence of this vulnerability highlights the ongoing need for organizations to maintain up-to-date software and apply security patches promptly. It also underscores the importance of having a proactive approach to identifying and mitigating potential attack surfaces.
Security teams should be aware of the patterns associated with SSRF vulnerabilities and implement appropriate defenses against such attacks. Regular security assessments and vulnerability scans are crucial in identifying weaknesses before they can be exploited.
For continuous security testing, organizations can benefit from continuous penetration testing services to ensure ongoing protection against emerging threats.
Finally, organizations should consider adopting a vulnerability management program to systematically address vulnerabilities and enhance overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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