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PatchSiren cyber security CVE debrief

CVE-2012-20004 Carles Reverter CVE debrief

A reflected cross-site scripting vulnerability exists in the K-news WordPress plugin before version 1.1.1. The vulnerability allows unauthenticated attackers to inject malicious script by supplying unsanitized input through the 'ff' parameter in the fontpicker index.php file. This type of vulnerability can lead to session cookie theft or other malicious activities. Defenders should assess exposure and prioritize verification and remediation efforts to prevent exploitation. The vulnerability has a CVSS score of 5.1 and is classified as MEDIUM severity. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.

Vendor
Carles Reverter
Product
K-news
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-23
Advisory published
2026-10-20
Advisory updated
2026-10-23

Who should care

Defenders responsible for WordPress installations with the K-news plugin should assess exposure and prioritize verification and remediation efforts. This includes verifying the version of the K-news plugin, applying updates to version 1.1.1 or later, implementing input validation and sanitization, and monitoring for suspicious activity. Additionally, defenders should review compensating controls for exposed systems, check relevant monitoring and logs, and

Why it matters

The K-news WordPress plugin vulnerability allows unauthenticated attackers to inject malicious script, potentially leading to session cookie theft or other malicious activities. Defenders should prioritize verification and remediation efforts to prevent exploitation.

  • Defenders should verify the version of the K-news plugin and apply updates to prevent exploitation
  • Implementing input validation and sanitization can prevent malicious script injection
  • Monitoring for suspicious activity can help detect potential exploitation attempts

Technical summary

The K-news WordPress plugin before version 1.1.1 contains a reflected cross-site scripting vulnerability. The vulnerability allows unauthenticated attackers to inject malicious script by supplying unsanitized input through the 'ff' parameter in the fontpicker index.php file. The vulnerability has a CVSS score of 5.1 and is classified as MEDIUM severity. This type of vulnerability can lead to session cookie theft or other malicious activities. Defenders should prioritize verifying the version of the K-news plugin and applying the necessary updates to prevent exploitation. Implementing input validation and sanitization can prevent malicious script injection. Monitoring for suspicious activity can help detect and

Defensive priority

Defenders should prioritize verifying the version of the K-news plugin and applying the necessary updates to prevent exploitation.

Recommended defensive actions

  • Verify the version of the K-news plugin and apply updates to version 1.1.1 or later
  • Implement input validation and sanitization for the 'ff' parameter in the fontpicker index.php file
  • Monitor for suspicious activity and implement additional security measures to prevent exploitation
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability was first observed by the Shadowserver Foundation on 2023-10-19. The CVE record and source item provide details about the vulnerability, including its description, CVSS score, and affected versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2012-20004 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2012-20004

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

  • CVE-2012-20004 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2012-20004

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

Supplemental references

  • K-news WordPress Plugin < 1.1.1 Reflected XSS via fontpicker index.php ff Parameter

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2012/20xxx/CVE-2012-20004.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://www.exploit-db.com/exploits/37484

    Supplemental source - exploit

  • Source reference

    Unverified legacy reference

    URL: https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-knews-multilingual-newsletters-ff-parameter-cross-site-scripting-1-1-0

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-knews-xss.yaml

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://wordpress.org/plugins/knews/

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/k-news-wordpress-plugin-1.1.1-reflected-xss-via-fontpicker-index-php-ff-parameter

    Supplemental source - third-party-advisory

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.