CVE-2026-22713 identifies an XSS vulnerability within the GrowthExperiments Extension of MediaWiki. This vulnerability allows attackers to inject malicious scripts through improper neutralization of input during web page generation. The affected versions of the GrowthExperiments Extension include 1.45, 1.44, 1.43, and 1.39.
The CVSS score for this vulnerability is 2.3, categorizing it as low severity. Despite its low score, the potential for XSS attacks necessitates immediate attention, as they can lead to unauthorized actions being performed on behalf of legitimate users. Organizations should prioritize patching to maintain the integrity of their systems.
Currently, there are no known exploits or public proof-of-concept reports. Nevertheless, the presence of an XSS vulnerability could facilitate various attacks, including data theft and session hijacking. Therefore, organizations must implement timely mitigations to safeguard against potential exploitation.
Organizations should prioritize patching immediately. The timely application of the necessary updates will significantly reduce the risk of exploitation and protect against potential threats associated with this vulnerability.
Vulnerability Details
The official description states that this vulnerability allows Cross-Site Scripting (XSS) due to improper neutralization of input during web page generation. The CVSS 4.0 score is 2.3, indicating a low severity ranking, while the CVSS 3.1 score is 5.4, categorized as medium severity. The impacted product is the GrowthExperiments Extension by the Wikimedia Foundation, affecting versions 1.45, 1.44, 1.43, and 1.39.
The underlying weakness is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation). The vulnerability was published on January 9, 2026, and the last modification occurred on February 12, 2026.
Technical Analysis
The root cause of CVE-2026-22713 is improper input validation within the GrowthExperiments Extension, which allows for the injection of malicious scripts. The attack vector is over the network, and the attack complexity is low, as no special conditions are necessary for exploitation. No privileges are required, and user interaction is passive, meaning that users may be affected without actively engaging with the exploit.
The potential impacts of this vulnerability are low with respect to confidentiality, integrity, and availability. An attacker may leverage this vulnerability to execute arbitrary scripts in the context of an affected user's session, leading to unauthorized actions or data exposure.
Risk & Impact Analysis
While the CVSS score indicates a low severity, organizations must recognize the real-world implications of XSS vulnerabilities. Such vulnerabilities can be exploited to bypass security controls, leading to unauthorized access to sensitive data or actions being performed on behalf of legitimate users. The blast radius can extend to all users interacting with the affected extension, potentially impacting reputation and trust.
Given the low CVSS score, organizations might consider this vulnerability to be lower priority; however, the potential for exploitation should not be underestimated. Organizations should assess their usage of the affected products and evaluate the urgency of remediation based on their specific environments and threat models.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of the GrowthExperiments Extension are affected: 1.39, 1.43, 1.44, and 1.45. Organizations using these versions should apply the necessary patches as soon as possible to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to the latest patched version of the GrowthExperiments Extension. If immediate upgrading is not possible, consider implementing input validation and sanitization measures to mitigate the risk of XSS.
Organizations can validate remediation effectiveness through penetration testing to identify similar weaknesses.
Detection Guidance
Organizations should monitor logs for any suspicious behavior that may indicate an XSS attack, such as unexpected script execution or changes in user session activities. Additionally, behavioral anomalies in user interactions with the GrowthExperiments Extension should be flagged for further investigation.
AppSecure Threat Intelligence Insight
CVE-2026-22713 highlights the ongoing challenge organizations face with XSS vulnerabilities, even in low-severity cases. It serves as a reminder that even seemingly minor issues can lead to significant risks if not addressed promptly. Security teams should remain vigilant and continuously assess their applications for similar vulnerabilities.
To enhance security posture, organizations should consider adopting a comprehensive vulnerability management program that addresses both low and high severity vulnerabilities.
For organizations utilizing cloud services, it is crucial to perform regular cloud security assessments to identify and mitigate vulnerabilities unique to those environments.
Lastly, maintaining an awareness of emerging threats and vulnerabilities through regular penetration testing methodology reviews can aid organizations in proactively addressing potential vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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