The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) in versions up to, and including, 1.2. This vulnerability allows unauthenticated attackers to inject arbitrary web scripts into pages that execute whenever a user accesses an injected page. The severity of this vulnerability is classified as high with a CVSS score of 7.2.
Risk to organizations includes potential unauthorized access to sensitive information and user data exposure, leading to further exploitation or malware delivery. Given the nature of web applications and the potential for widespread impact, it is crucial for organizations using this plugin to assess their exposure.
Currently, there is no public exploit confirmed for this vulnerability, but the possibility for exploitation exists due to the nature of XSS vulnerabilities. Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
The vulnerability was published on February 22, 2025, and affects the YaySMTP plugin by YayCommerce. Organizations should remain vigilant and monitor for updates related to this vulnerability.
Vulnerability Details
The YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to insufficient input sanitization and output escaping. This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The CVSS score assigned to this vulnerability is 7.2, indicating a high severity level. This vulnerability is classified as having a network attack vector, low attack complexity, and requires no privileges or user interaction.
The affected product is the YaySMTP plugin, specifically versions prior to 1.2.
Technical Analysis
The root cause of this vulnerability lies in the plugin's failure to properly sanitize user input before rendering it in the browser. Attackers may leverage this vulnerability by crafting malicious scripts that, when injected into an affected page, execute in the context of the user's browser.
The attack vector is network-based, and because it requires no authentication, the complexity is low. Privileges are not required, and user interaction is not necessary for the attack to succeed. The confidentiality and integrity impacts are both rated as low, while the availability impact is none.
Risk & Impact Analysis
Real-world deployment risk for organizations includes the potential for attackers to exploit this vulnerability to gain unauthorized access to user data, which could lead to data breaches and other security incidents. The blast radius is significant due to the widespread use of the YaySMTP plugin across numerous WordPress installations.
Organizations should assess their current security posture and the urgency of addressing this vulnerability, particularly given its high CVSS score of 7.2. Immediate patching is imperative to prevent potential exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the YaySMTP plugin for WordPress are up to and including version 1.2. Organizations should ensure they upgrade to the latest version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should apply the latest patch for the YaySMTP plugin to remediate this vulnerability. Regularly checking for updates and applying them promptly can significantly reduce the risk of exploitation.
If a patch is not available, organizations are advised to disable the YaySMTP plugin until a fix can be applied. Additionally, configuration hardening and implementing web application firewalls can provide an added layer of protection.
For further assistance, organizations can consider engaging in penetration testing to identify other vulnerabilities.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for unusual web traffic patterns and look for signs of script injections in user content submissions.
Log analysis for anomalies that could indicate an XSS attack, including unexpected script tags or event handlers, is also crucial.
AppSecure Threat Intelligence Insight
This vulnerability highlights ongoing challenges with input sanitization in web applications. Organizations must prioritize secure coding practices to prevent similar vulnerabilities in the future.
Regular security assessments such as penetration testing methodology can uncover vulnerabilities before they are exploited.
Additionally, organizations should consider continuous security practices, including vulnerability management programs, to ensure ongoing protection against newly emerging threats.
Overall, understanding and mitigating vulnerabilities like CVE-2025-0953 is critical for maintaining the security posture of web applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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