Skip to content
Fencer Vulns
medium 6.5

CVE-2022-26385 json

In unusual circumstances, an individual thread may outlive the thread's manager during shutdown.

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-30944

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

In unusual circumstances, an individual thread may outlive the thread's manager during shutdown. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox < 98.

Patch / fix

  • Mozilla Firefox 98
  • firefox Ubuntu 18.04 LTS 98.0+build3-0ubuntu0.18.04.2
  • firefox Ubuntu 20.04 LTS 98.0+build3-0ubuntu0.20.04.2
  • firefox Ubuntu 22.04 LTS 1:1snap1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-26385

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 98.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:11908-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 98.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 98.0-r0

alpine advisories ALPINE-CVE-2022-26385

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • firefox Arch Linux 98.0-1

arch linux advisories AVG-2714

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1747526 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Mozilla Firefox

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.