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Fencer Vulns
medium 6.5

CVE-2022-28283 json

The sourceMapURL feature in devtools was missing security checks that would have allowed a webpage to attempt to include local files or oth…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32735

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 48%
public exploits
0
none known

Summary

The sourceMapURL feature in devtools was missing security checks that would have allowed a webpage to attempt to include local files or other files that should have been inaccessible. 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-2022-28283

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-2022-28283

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
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2022-13/ referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1754066 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:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-552 Files or Directories Accessible to External Parties

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.