CVE-2026-4730: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in commonninja Charts Ninja: Create Beautiful Graphs & Charts and Easily Add Them to Your Website
The Charts Ninja WordPress plugin up to version 2.1.0 contains a stored cross-site scripting (XSS) vulnerability via the 'chartid' shortcode attribute. Authenticated users with Contributor-level access or higher can inject malicious scripts that execute when other users view the affected pages. This vulnerability arises from insufficient input sanitization and output escaping. The CVSS score is 6.4, indicating a medium severity risk. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-4730 is a stored cross-site scripting vulnerability in the Charts Ninja WordPress plugin (versions up to 2.1.0). The flaw exists due to improper neutralization of input in the 'chartid' shortcode attribute, allowing authenticated users with Contributor-level permissions or higher to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial impact on confidentiality and integrity. No vendor advisory or patch is currently documented.
Potential Impact
An attacker with Contributor-level or higher access can exploit this vulnerability to inject persistent malicious scripts into pages generated by the plugin. When other users view these pages, the scripts execute in their browsers, potentially leading to partial confidentiality and integrity compromise such as theft of user credentials or unauthorized actions performed on behalf of the user. There is no impact on availability reported. No known active exploitation has been observed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only. Consider disabling or removing the Charts Ninja plugin if feasible to reduce exposure. Monitor for plugin updates from commonninja that address this vulnerability.
CVE-2026-4730: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in commonninja Charts Ninja: Create Beautiful Graphs & Charts and Easily Add Them to Your Website
Description
The Charts Ninja WordPress plugin up to version 2.1.0 contains a stored cross-site scripting (XSS) vulnerability via the 'chartid' shortcode attribute. Authenticated users with Contributor-level access or higher can inject malicious scripts that execute when other users view the affected pages. This vulnerability arises from insufficient input sanitization and output escaping. The CVSS score is 6.4, indicating a medium severity risk. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 6.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4730 is a stored cross-site scripting vulnerability in the Charts Ninja WordPress plugin (versions up to 2.1.0). The flaw exists due to improper neutralization of input in the 'chartid' shortcode attribute, allowing authenticated users with Contributor-level permissions or higher to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial impact on confidentiality and integrity. No vendor advisory or patch is currently documented.
Potential Impact
An attacker with Contributor-level or higher access can exploit this vulnerability to inject persistent malicious scripts into pages generated by the plugin. When other users view these pages, the scripts execute in their browsers, potentially leading to partial confidentiality and integrity compromise such as theft of user credentials or unauthorized actions performed on behalf of the user. There is no impact on availability reported. No known active exploitation has been observed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only. Consider disabling or removing the Charts Ninja plugin if feasible to reduce exposure. Monitor for plugin updates from commonninja that address this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-23T23:26:58.201Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f95b2ccbff5d861087956d
Added to database: 5/5/2026, 2:51:24 AM
Last enriched: 5/12/2026, 6:26:26 AM
Last updated: 6/18/2026, 9:53:48 AM
Views: 52
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