CVE-2026-4011 json
Power Charts <= 0.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute
published 2026-04-15 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-22869
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
The Power Charts Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the [pc] shortcode in all versions up to, and including, 0.1.0. This is due to insufficient input sanitization and output escaping on the 'id' shortcode attribute. Specifically, in the pc_shortcode() function, the 'id' attribute is extracted from user-supplied shortcode attributes and directly concatenated into an HTML div element's class attribute without any escaping or sanitization at line 62. The resulting HTML is then passed through html_entity_decode() before being returned, further undermining any potential safety. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- dgwyer Power Charts – Responsive Beautiful Charts & Graphs
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/ea41d391-ba8d-43d9-8eda-69ac28c49328?source=cve
- plugins.trac.wordpress.org /browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L40
- plugins.trac.wordpress.org /browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L62
- plugins.trac.wordpress.org /browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L62
- plugins.trac.wordpress.org /browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L40
Sources
- CVE List CVE-2026-4011
- NVD CVE-2026-4011
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.