Mozilla Firefox ESR

CVE-2022-31744

MEDIUM 6.5

At a glance

Source: NVD
EPSS: EPSS 0.62 % · percentile 50 (2026-10-29)
State: PUBLISHED
Published: 2022-12-22 00:00 UTC
Updated: 2025-04-15 18:29 UTC
Assigner: mozilla
NVD status: Modified

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Description

An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.

Weaknesses (CWE)

CWE-79 — Improper Neutralization of Input During Web Page Generation

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	CISA-ADP
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	NVD · nvd@nist.gov (Primary)
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

ENISA EUVD · EUVD-2022-53142
GCVE · GCVE-0-2022-31744

CERT-FR advisories

CERTFR-2022-AVI-590 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
CERTFR-2022-AVI-511 — Multiples vulnérabilités dans Mozilla Firefox · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* < 101.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* < 91.11
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* < 91.11

Affected products

Product	Versions
Mozilla · Firefox ESR	affected unspecified < 91.11
Mozilla · Thunderbird	affected unspecified < 102 ; affected unspecified < 91.11
Mozilla · Firefox	affected unspecified < 101

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

🟡 Mozilla Firefox ESR