CVE-2022-42927

HIGH

8.1

CVSS Score

Published: December 22, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 05:05 AM UTC

3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

Using Firefox by Mozilla?

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

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH8.1

Exploit prediction

EPSS 0.4%

SSVC

PoC

Description

A same-origin policy violation could have allowed the theft of cross-origin URL entries, leaking the result of a redirect, via `performance.getEntries()`. This vulnerability affects Firefox < 106, Firefox ESR < 102.4, and Thunderbird < 102.4.

Affected

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

Firefox · Mozilla

95%

v < 106

Affected range stops below 106, so it looks safe — our inference, not a vendor statement

Affected range stops below 106.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

95%

v < 102.4

Affected range stops below 102.4, so it looks safe — our inference, not a vendor statement

Thunderbird · Mozilla

95%

v < 102.4

Affected range stops below 102.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Issue TrackingPermissions Required

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1789128

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-44/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-45/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-46/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

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

CVSS

8.1HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-346

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 account Sign in

Free plan, no card