CVE-2026-1848 is a high-severity vulnerability affecting MongoDB, specifically related to connections received from the proxy port. This vulnerability allows for connections that may not count towards the total accepted connections, which could result in server crashes when the total number of connections exceeds available resources. Given its potential impact on system availability, organizations should prioritize patching immediately.
The vulnerability has a CVSS score of 8.2, indicating a high level of risk. The attack vector is network-based, and the attack complexity is low, meaning that attackers can exploit this vulnerability without requiring special conditions. As such, it poses a significant risk to organizations that utilize MongoDB in their infrastructure.
It is crucial for organizations to recognize the urgency of this vulnerability, as it may lead to service disruptions and operational challenges. With the potential for crashes due to excessive connections, proactive measures should be implemented to mitigate this risk.
As of now, there are no known exploits or public proof-of-concept (PoC) available. However, the absence of known exploits does not diminish the importance of addressing this vulnerability promptly, as attackers could develop methods to exploit it.
Organizations should focus on implementing the necessary patches and updates to safeguard their systems against this vulnerability. Failure to do so could result in significant downtime and operational disruptions.
Vulnerability Details
The official description of CVE-2026-1848 states that connections received from the proxy port may not count towards total accepted connections, which can lead to server crashes if the total number of connections exceeds available resources. This issue specifically pertains to connections accepted from the proxy port, pending the proxy protocol header.
This vulnerability is classified under CWE-770, which refers to "Allocation of Resources Without Limits or Throttling." The CVSS score of 8.2 reflects the potential impact on availability, as it can lead to server crashes.
The affected version ranges include MongoDB versions from 7.0.0 up to (but not including) 7.0.29, as well as versions from 8.0.0 up to (but not including) 8.0.18 and from 8.2.0 up to (but not including) 8.2.4.
Technical Analysis
The root cause of CVE-2026-1848 lies in how connections from the proxy port are handled within MongoDB. When these connections do not count towards the total accepted connections, it can lead to resource exhaustion. This vulnerability can be exploited through a network attack, with low complexity, meaning that an attacker can initiate the attack without requiring special knowledge or conditions.
No privileges are required for an attacker to exploit this vulnerability, and user interaction is not necessary. The impact on availability is high, as the server can become unresponsive due to the exhaustion of connection resources.
Risk & Impact Analysis
The real-world risk associated with CVE-2026-1848 is significant. Organizations using MongoDB may experience unexpected server crashes due to the inability to manage connection resources adequately. This vulnerability can lead to extended downtime, loss of productivity, and potential data loss.
Given the high CVSS score, organizations should assess the urgency of remediation as high. Patching should be prioritized due to the potential for operational disruptions that can arise from a successful exploitation of this vulnerability.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
MongoDB versions affected by this vulnerability include:
1. Versions from 7.0.0 to 7.0.29 (exclusive)
2. Versions from 8.0.0 to 8.0.18 (exclusive)
3. Versions from 8.2.0 to 8.2.4 (exclusive)
Mitigation & Remediation
Organizations should prioritize patching MongoDB to the latest version to mitigate this vulnerability. The recommended versions are those that are not included in the affected ranges.
In the interim, organizations can implement configuration hardening by monitoring connection limits and ensuring that proxy connections are correctly managed to prevent resource exhaustion.
Continuous penetration testing can also help identify similar weaknesses in the environment.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual connection patterns, especially from the proxy port. Additionally, tracking system resource usage can help identify when connection limits are being approached.
Behavioral anomalies may indicate attempts to exploit this vulnerability, and network signatures should be established to detect excessive connection attempts.
AppSecure Threat Intelligence Insight
CVE-2026-1848 represents a critical vulnerability in how MongoDB handles proxy connections. Organizations must recognize this issue as indicative of broader systemic risks related to network security management.
This vulnerability highlights the importance of rigorous connection management and resource allocation strategies. Security teams should consider implementing comprehensive security assessments to understand their exposure to similar vulnerabilities.
Penetration testing methodology may provide insights into identifying and addressing these types of vulnerabilities effectively.
In summary, proactive measures must be employed to ensure the security of MongoDB deployments. Organizations should continually assess their security practices and consider utilizing services such as application security assessments to enhance their defensive posture against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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