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Fencer Vulns
medium 6.1

CVE-2022-36316 json

When using the Performance API, an attacker was able to notice subtle differences between PerformanceEntries and thus learn whether the tar…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-39032

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

When using the Performance API, an attacker was able to notice subtle differences between PerformanceEntries and thus learn whether the target URL had been subject to a redirect. This vulnerability affects Firefox < 103.

Patch / fix

  • Mozilla Firefox 103
  • firefox Ubuntu 18.04 LTS 103.0+build1-0ubuntu0.18.04.1
  • firefox Ubuntu 20.04 LTS 103.0+build1-0ubuntu0.20.04.1
  • thunderbird Ubuntu 20.04 LTS 1:102.2.2+build1-0ubuntu0.20.04.1
  • thunderbird Ubuntu 22.04 LTS 1:102.2.2+build1-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2022-36316

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 103.0.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:12227-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +4 more 103.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 103.0-r0

alpine advisories ALPINE-CVE-2022-36316

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

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.