vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2022-31744

MEDIUM
6.5
CVSS Score
Published: December 22, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:46 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

Using Firefox ESR by Mozilla?

Get instant alerts when new vulnerabilities affect Firefox ESR - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox· Mozilla
95%
v < 101
Affected range stops below 101, so it looks safe — our inference, not a vendor statement
Affected range stops below 101.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 91.11
Affected range stops below 91.11, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 102v < 91.11
Affected range stops below 102, so it looks safe — our inference, not a vendor statement
Affected range stops below 91.11, so it looks safe — our inference, not a vendor statement

References (4)

Issue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1757604
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-20/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-25/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-26/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card