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PatchSiren cyber security CVE debrief

CVE-2026-42643 StellarWP CVE debrief

A Cross-site Scripting (XSS) vulnerability exists in the Image Widget plugin for WordPress, affecting versions from n/a through 4.4.11. This issue allows for Stored XSS, potentially enabling attackers to inject malicious scripts into web pages. The vulnerability has a CVSS score of 5.9 and is classified as MEDIUM severity. Defenders responsible for WordPress installations with the Image Widget plugin should assess exposure and prioritize updates to prevent potential XSS attacks. The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and severity.

Vendor
StellarWP
Product
Image Widget
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-29
Original CVE updated
2026-10-26
Advisory published
2026-04-29
Advisory updated
2026-10-26

Who should care

Defenders responsible for WordPress installations with the Image Widget plugin should assess exposure and prioritize updates to prevent potential XSS attacks.

Why it matters

Defenders should care about CVE-2026-42643 because it allows for Stored XSS attacks on WordPress installations with the Image Widget plugin, potentially enabling attackers to inject malicious scripts and perform unauthorized actions. Defenders responsible for WordPress installations with this plugin should assess exposure, prioritize updates, and implement input validation and output encoding to prevent XSS attacks.

  • Potential injection of malicious scripts into web pages.
  • Unauthorized actions on affected systems.
  • Required verification and updates to the Image Widget plugin.

Technical summary

The Image Widget plugin for WordPress is vulnerable to Stored Cross-site Scripting (XSS) attacks. This issue affects versions from n/a through 4.4.11. An attacker could potentially inject malicious scripts into web pages, allowing for unauthorized actions on affected systems.

Defensive priority

Defenders should prioritize verifying and updating the Image Widget plugin to prevent potential XSS attacks.

Recommended defensive actions

  • Verify and update the Image Widget plugin to the latest version.
  • Implement input validation and output encoding to prevent XSS attacks.
  • Monitor for potential malicious activity on affected systems.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 5.9 and MEDIUM severity. The vulnerability affects versions from n/a through 4.4.11 of the Image Widget plugin for WordPress. Defenders should verify and update the plugin to the latest version and implement input validation and output encoding to prevent XSS attacks. The NVD entry and CVE record are official sources that provide information on the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42643 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42643

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-42643 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42643

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.