CVE-2026-27069 in Soledad Plugin
Summary
by MITRE • 02/19/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PenciDesign Soledad soledad allows DOM-Based XSS.This issue affects Soledad: from n/a through <= 8.7.2.
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Analysis
by VulDB Data Team • 02/22/2026
The vulnerability CVE-2026-27069 represents a critical cross-site scripting flaw in the PenciDesign Soledad WordPress theme, specifically categorized as a DOM-Based XSS vulnerability under CWE-79. This weakness occurs during web page generation when user input is improperly handled, creating an avenue for malicious actors to inject client-side scripts into web pages viewed by other users. The vulnerability affects all versions of the Soledad theme from the initial release through version 8.7.2, indicating a prolonged exposure window that could have allowed extensive exploitation. The DOM-based nature of this XSS vulnerability means that the malicious script is executed within the victim's browser through manipulation of the Document Object Model rather than through server-side injection, making it particularly challenging to detect and mitigate.
The technical flaw stems from insufficient sanitization and validation of input parameters that are processed within the theme's JavaScript code. When users interact with the theme's functionality, particularly through dynamic content loading or parameter handling, malicious payloads can be injected into DOM elements without proper neutralization. This creates a persistent threat vector where attackers can craft malicious URLs or input that, when processed by the vulnerable theme, executes arbitrary JavaScript code in the context of the victim's browser session. The vulnerability is particularly concerning because it operates entirely within the browser environment, bypassing traditional server-side security controls and making it difficult to trace through conventional logging mechanisms.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attacks such as session hijacking, credential theft, and redirection to malicious sites. Attackers can leverage this vulnerability to steal cookies, modify page content, redirect users to phishing sites, or even deploy additional malware. The persistent nature of DOM-based XSS means that once a user visits a compromised page, the malicious script remains active until the browser session ends, potentially allowing attackers to maintain access to user sessions for extended periods. This vulnerability affects not only individual users but also website administrators who may be tricked into visiting malicious links, potentially compromising entire website infrastructures. The broad version range of affected software indicates that many websites may be exposed to this risk without proper patching or updates.
Mitigation strategies should focus on immediate patching of the vulnerable Soledad theme to version 8.7.3 or later, which contains the necessary security fixes. Organizations should also implement comprehensive input validation and output encoding mechanisms to prevent unauthorized script injection, particularly in dynamic content rendering processes. Network-level protections such as Content Security Policy (CSP) headers can provide additional defense-in-depth measures by restricting script execution sources. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the web application stack. The vulnerability aligns with ATT&CK technique T1059.007 for scripting and T1566 for credential access, highlighting the multi-faceted nature of the threat. Additionally, implementing proper web application firewalls and monitoring for suspicious input patterns can help detect and prevent exploitation attempts, while user education about avoiding suspicious links and maintaining updated software remains a critical defense layer against such attacks.