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CVE-2026-0635: Medium Vulnerability in Responsive Accordion Slider Plugin for WordPress

The Responsive Accordion Slider plugin for WordPress has a medium-severity vulnerability that allows unauthorized modification of image metadata. Organizations using this plugin should prioritize patching to prevent potential data manipulation.

MEDIUMCVSS 4.3 · Published January 14, 2026

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The Responsive Accordion Slider plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'resp_accordion_silder_save_images' function in all versions up to, and including, 1.2.2. This vulnerability allows authenticated attackers, with Contributor-level access and above, to modify any slider's image metadata including titles, descriptions, alt text, and links. The severity of this vulnerability is classified as medium, with a CVSS score of 4.3, indicating that it poses a moderate risk to organizations.

The absence of a capability check means that any authenticated user with the appropriate access level could exploit this vulnerability to alter crucial metadata associated with sliders, potentially affecting the integrity of the displayed content. Given that the attack vector is network-based, the risk of exploitation is particularly significant for websites using this plugin in a publicly accessible manner.

Organizations should prioritize understanding the implications of this vulnerability and take action accordingly. The exploitation status is currently deferred, but it is crucial to stay vigilant, as the lack of an immediate patch may lead to increased risk if left unaddressed. Organizations using the Responsive Accordion Slider plugin should ensure they are using an updated version that addresses this issue.

With the availability of this vulnerability, organizations should assess their risk and be prepared for potential exploitation. Immediate action is recommended to secure the affected systems, ensuring that any modifications to the slider's metadata are monitored and controlled.

Vulnerability Details

The Responsive Accordion Slider plugin for WordPress is vulnerable due to a missing capability check on the 'resp_accordion_silder_save_images' function. This vulnerability allows attackers with Contributor-level access and above to modify slider image metadata. The CVSS score for this vulnerability is 4.3, categorized as medium severity. The vulnerability was published on January 14, 2026, and the last modification was made on April 15, 2026.

Technical Analysis

The root cause of this vulnerability lies in the lack of a capability check in the function responsible for saving slider images. Attackers can exploit this by sending a crafted request to the server, allowing them to modify image metadata without proper authorization. The attack vector is network-based, requiring only low privileges to execute. User interaction is not required, making this vulnerability particularly dangerous.

The attack complexity is low, meaning that even moderately skilled attackers could exploit this vulnerability if they have the appropriate access level. The integrity impact is classified as low, as attackers may alter image metadata but cannot manipulate the images themselves. There is no confidentiality or availability impact associated with this vulnerability.

Risk & Impact Analysis

Risk to organizations includes unauthorized modifications of content, which may lead to misinformation or misrepresentation of the images displayed on websites. The potential blast radius is significant, especially for high-traffic sites that rely on the integrity of their content. Given the medium severity classification, organizations should address this vulnerability in their priority patch cycle to mitigate risks associated with exploitation.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions prior to vendor patch, including and up to version 1.2.2 of the Responsive Accordion Slider plugin for WordPress are affected by this vulnerability.

Mitigation & Remediation

Organizations should prioritize patching immediately by updating the Responsive Accordion Slider plugin to the latest version that addresses this vulnerability. If the patch is unavailable, consider implementing workarounds such as restricting access rights for Contributor-level users and above to mitigate potential exploitation. Configuration hardening and network controls should also be evaluated to further secure the application.Penetration testing can also be utilized to identify similar weaknesses in the web application.

Detection Guidance

Monitoring logs for unauthorized changes to image metadata within the Responsive Accordion Slider plugin should be a priority. Look for behavioral anomalies that indicate attempts to modify slider content without appropriate permissions. Network signatures that capture unexpected requests to the 'resp_accordion_silder_save_images' function should also be established to detect potential exploitation.

AppSecure Threat Intelligence Insight

This vulnerability underscores the importance of implementing capability checks within WordPress plugins to prevent unauthorized data modifications. It represents a broader trend of vulnerabilities arising from insufficient access controls in web applications. Security teams should take this opportunity to review their development practices and ensure thorough testing for similar issues. For further insights, organizations can explore vulnerability management programs and consider implementing hybrid security approaches that integrate both offensive and defensive measures.

Regular audits of plugin security can help organizations stay ahead of potential vulnerabilities. Additionally, the integration of automated security testing into the development lifecycle can greatly reduce the risk of similar vulnerabilities being introduced in the future. By prioritizing security from the outset, organizations can build more resilient applications.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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