CVE-2026-2825 identifies a cross-site scripting vulnerability in the rachelos WeRSS we-mp-rss product, specifically affecting versions 1.4.0 through 1.4.8. The vulnerability resides in the fix_html function of the tools/fix.py file within the Article Module, which inadequately sanitizes or encodes user-supplied input before rendering it in HTML contexts. This improper handling allows an attacker to inject malicious JavaScript code remotely. The attack vector is network-based with no authentication required, but successful exploitation depends on user interaction, such as clicking a maliciously crafted link or visiting a compromised page. The vulnerability impacts the confidentiality and integrity of user data by enabling script execution in the victim's browser, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The CVSS v4.0 score is 5.1 (medium severity), reflecting the ease of exploitation and limited scope of impact. No patches or official fixes are currently linked, and no known exploits have been observed in the wild, though public disclosure raises the risk of exploitation attempts. The vulnerability highlights the importance of robust input validation and output encoding in web applications to prevent XSS attacks.

The primary impact of CVE-2026-2825 is the potential compromise of user confidentiality and integrity through the execution of arbitrary scripts in the context of the victim's browser. This can lead to session hijacking, theft of sensitive information such as cookies or credentials, and unauthorized actions performed on behalf of the user. For organizations, this can result in data breaches, loss of user trust, and potential regulatory penalties if personal data is exposed. Since the vulnerability is remotely exploitable without authentication but requires user interaction, phishing or social engineering campaigns could be used to trigger the attack. The scope is limited to users interacting with the vulnerable application, but given the public disclosure, attackers may develop automated exploit tools. The absence of availability impact means service disruption is unlikely, but the reputational damage and downstream consequences of data compromise can be significant. Organizations relying on WeRSS we-mp-rss for content aggregation or RSS feed management are particularly at risk.

To mitigate CVE-2026-2825, organizations should first verify if they are running affected versions (1.4.0 through 1.4.8) of rachelos WeRSS we-mp-rss. If possible, upgrade to a fixed version once available from the vendor. In the absence of an official patch, apply strict input validation and output encoding on all user-supplied data processed by the fix_html function or related components. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Additionally, implement web application firewalls (WAFs) with rules targeting common XSS attack patterns to detect and block exploit attempts. Educate users about the risks of clicking suspicious links and encourage cautious behavior. Regularly monitor logs for unusual activity indicative of attempted XSS exploitation. Finally, conduct security code reviews and penetration testing focused on input sanitization and output encoding to proactively identify and remediate similar vulnerabilities.