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CVE-2026-24810: Critical Vulnerability in RethinkDB

CVE-2026-24810 describes a critical buffer overflow vulnerability in RethinkDB, specifically in the cJSON module. Organizations using affected versions should prioritize patching to mitigate potential risks.

CRITICALCVSS 10 · Published January 27, 2026

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CVE-2026-24810 is a critical vulnerability affecting RethinkDB, specifically through the cJSON module. This vulnerability allows for a buffer copy without checking the size of the input, leading to a classic buffer overflow condition. The issue is particularly concerning as it impacts all versions of RethinkDB up to v2.4.4.

The CVSS score for this vulnerability is 10, which is classified as critical. This high severity level indicates that organizations must take immediate action to address this vulnerability, as exploitation could result in significant impacts on confidentiality, integrity, and availability.

Risk to organizations includes unauthorized access and potential data compromise. Given the nature of the vulnerability, it is crucial for organizations to assess their exposure and implement necessary remediation strategies.

Currently, there are no known exploits associated with this vulnerability, and it is not included in the Known Exploited Vulnerabilities (KEV) catalog. However, the critical nature of this vulnerability necessitates immediate attention and patching.

Organizations should prioritize patching immediately to mitigate the risks associated with CVE-2026-24810.

Vulnerability Details

The vulnerability allows for a buffer copy without checking the size of the input, leading to a classic buffer overflow condition in the cJSON module of RethinkDB. The critical vulnerability affects RethinkDB versions through v2.4.4 and has a CVSS score of 10, indicating critical severity.

The vulnerability's CWE classification is CWE-120, which relates to the failure to check the size of input buffers. This issue could allow attackers to exploit the vulnerability if they can send maliciously crafted input to the affected module.

The vulnerability was published on January 27, 2026, and is classified as deferred. Organizations should keep an eye on future developments regarding this vulnerability.

Technical Analysis

The root cause of CVE-2026-24810 stems from an improper handling of input sizes in the cJSON module of RethinkDB. The attack vector is network-based, meaning attackers could potentially exploit this from a remote location without direct access to the system.

The attack complexity is considered low, as no special privileges or user interaction are required to exploit this vulnerability. This increases the overall risk, as attackers can potentially carry out successful exploits without needing extensive resources or access.

The confidentiality, integrity, and availability impacts of this vulnerability are all classified as high. Attackers may leverage this vulnerability to execute arbitrary code, potentially leading to a complete system compromise.

Given the nature of the vulnerability, organizations should be vigilant in monitoring for any signs of exploitation and take immediate steps to remediate the issue.

Risk & Impact Analysis

The real-world deployment risk associated with CVE-2026-24810 is significant. Organizations using affected versions of RethinkDB could face unauthorized access, data breaches, or service disruptions if the vulnerability is exploited.

Why this matters to organizations is clear: the potential impact on sensitive data and operational continuity is high. Attackers could exploit this vulnerability to gain control of systems, exfiltrate data, or launch further attacks within the network.

The blast radius potential is extensive, especially for organizations that have integrated RethinkDB into critical applications or services. Given its high severity, organizations should assess their risk posture and implement necessary security measures.

The urgency assessment based on the CVSS score indicates organizations should prioritize remediation efforts and address this vulnerability in their patch cycle.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

RethinkDB versions through v2.4.4 are affected by this vulnerability. Organizations should verify their version and ensure they are not running any vulnerable iterations.

Mitigation & Remediation

Organizations should prioritize patching immediately. It is essential to upgrade to the latest version of RethinkDB to mitigate this vulnerability effectively. If an immediate upgrade is not feasible, consider implementing security controls and monitoring systems to detect any abnormal behavior that may indicate an exploitation attempt.

Detection Guidance

Monitoring network traffic for unusual patterns can help detect potential exploitation attempts. Additionally, organizations should keep logs of cJSON module activity and review them for any anomalies that may suggest unauthorized access.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2026-24810 highlights the potential for exploitation in widely used databases. As organizations increasingly rely on open-source software, understanding vulnerabilities like this is crucial for maintaining security.

This vulnerability represents a broader trend of buffer overflow issues in software development, emphasizing the need for stringent input validation practices. Security teams should take this incident as a lesson to reinforce their defensive strategies.

For more insights on security testing, organizations can explore our penetration testing services to identify security weaknesses.

Moreover, staying updated with the latest security trends is vital. Organizations can benefit from our 2025 Vulnerability Exposure Severity Trends report to understand the evolving landscape.

Finally, organizations are encouraged to implement a comprehensive vulnerability management program to proactively address security weaknesses.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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