// For flags

CVE-2022-42927

Mozilla: Same-origin policy violation could have leaked cross-origin URLs

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

< 1%
*EPSS

Affected Versions

3
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Una infracción de la política del mismo origen podría haber permitido el robo de entradas de URL de origen cruzado, filtrando el resultado de una redirección, a través de 'performance.getEntries()'. Esta vulnerabilidad afecta a Firefox &lt; 106, Firefox ESR &lt; 102.4 y Thunderbird &lt; 102.4.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of a same-origin policy violation that could have allowed the theft of cross-origin URL entries, leaking the result of a redirect via `performance.getEntries()`.

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. It was discovered that Firefox saved usernames to a plaintext file. A local user could potentially exploit this to obtain sensitive information.

*Credits: James Lee
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-10-14 CVE Reserved
  • 2022-10-20 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-346: Origin Validation Error
  • CWE-829: Inclusion of Functionality from Untrusted Control Sphere
CAPEC
Affected Vendors, Products, and Versions (3)