A security flaw has been discovered in QuestDB UI versions up to 1.11.9. This vulnerability allows for cross-site scripting (XSS) attacks, which can be executed remotely. As the exploit has been publicly released, organizations should be aware of the potential risks associated with this vulnerability.
With a CVSS score of 2, this vulnerability is classified as low severity, yet still poses a risk to organizations. The urgency for defenders is moderate, as it is recommended to upgrade to version 1.1.10 to address this issue. The vendor has confirmed that the fix will also be included in QuestDB version 9.3.0.
Understanding the nature of this vulnerability is crucial as attackers may leverage it to manipulate the Web Console, potentially leading to unauthorized actions or data exposure. Organizations should prioritize patching to mitigate these risks.
Organizations should address this vulnerability in their patch cycle to prevent potential exploitation. Failure to do so might expose systems to unnecessary risks.
Vulnerability Details
The vulnerability allows for cross-site scripting, affecting an unknown function of the QuestDB Web Console. The CVSS version 4.0 score is 2, indicating a low level of severity. The affected component is the Web Console, and the recommended action is to upgrade to version 1.1.10, which addresses this security flaw.
The vulnerability was published on January 10, 2026, and is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation) and CWE-94 (Improper Control of Generation of Code ('Code Injection')).
Technical Analysis
The root cause of this vulnerability stems from inadequate input validation in the Web Console. This flaw allows attackers to inject malicious scripts into web pages viewed by users. The attack vector is network-based, and the attack complexity is low, as it does not require extensive knowledge or resources to exploit.
The privileges required to exploit this vulnerability are low, meaning that an attacker with basic access could potentially leverage this flaw. User interaction is passive, requiring only that a user views the compromised page.
The confidentiality impact is none, while the integrity impact is low, indicating that some data may be manipulated. There is no availability impact associated with this vulnerability.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized actions through the manipulation of web pages, leading to data exposure or misinformation. The blast radius is moderate due to the remote exploitability of the vulnerability.
Organizations should assess the urgency of addressing this vulnerability as moderate, given its low severity score. However, the potential for exploitation is real, and timely remediation is essential.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch 1.1.10 are affected by this vulnerability. Organizations should ensure their systems are updated accordingly.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to QuestDB version 1.1.10 or later. If immediate upgrades are not feasible, consider implementing web application firewall (WAF) rules to mitigate XSS risks until the patch can be applied.
For continuous security measures, organizations may want to look into continuous security testing to identify similar weaknesses in their infrastructure.
Detection Guidance
Organizations should monitor for unusual behavior in the Web Console, such as unexpected input or script execution. Log indicators that may signify exploitation attempts should be prioritized for review.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of regular updates and scrutiny of web-facing components. Security teams should consider implementing a comprehensive vulnerability management program to proactively address potential risks.
Additionally, organizations should engage in penetration testing to assess the resilience of their applications against such vulnerabilities.
Finally, the evolving nature of vulnerabilities like this one underscores the need for red teaming exercises as part of a robust security strategy.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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