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TI-2023-18842 Aliases CVE-2023-37209GHSA-qvg2-h6w2-cvwj

Use after free in Mozilla Firefox

Priority LOW 39CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox < 115.

Why it matters now

EPSS 0.00594 48th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 115

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 115115Patch availableCNA
  • Firefox VendorMozilla Affected before 115 Fixed in 115 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 115.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 115.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 115

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 115

    13 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2023-18834 Use after free in Mozilla FirefoxPriority HIGH 73
    • TI-2023-18841 Unrestricted file upload in Mozilla FirefoxPriority HIGH 69
    • TI-2023-18840 A website could have obscured the fullscreen notification by using a URL with a scheme…Priority MEDIUM 62
    Show all 13 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-37209
  2. 2026-10-03 Alias added: GHSA-qvg2-h6w2-cvwj

References

Advisory 1

Other 2

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences