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Fencer Vulns
high 8.8

CVE-2022-28284 json

SVG's <code>&lt;use&gt;</code> element could have been used to load unexpected content that could have executed script in certain circumsta…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32736

cvss
8.8
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 48%
public exploits
0
none known

Summary

SVG's <code>&lt;use&gt;</code> element could have been used to load unexpected content that could have executed script in certain circumstances. While the specification seems to allow this, other browsers do not, and web developers relied on this property for script security so gecko's implementation was aligned with theirs. This vulnerability affects Firefox < 99.

Patch / fix

  • Mozilla Firefox 99
  • firefox Ubuntu 18.04 LTS 99.0+build2-0ubuntu0.18.04.2
  • firefox Ubuntu 20.04 LTS 99.0+build2-0ubuntu0.20.04.2
  • firefox Ubuntu 22.04 LTS 1:1snap1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-28284

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 99.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:11975-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 99.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 99.0-r0

alpine advisories ALPINE-CVE-2022-28284

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 99.0-1

arch linux advisories AVG-2711

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1754522 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-116 Improper Encoding or Escaping of Output

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.