Vulnerability · Published Oct 24, 2023 · Assigned by mozilla
CVE-2023-5726
Medium 4.3
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)0.7%top 46.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. *Note: This issue only affected macOS operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.21 | firefox | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.22 | firefox | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.23 | firefox | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.20 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.21 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.22 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.23 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.22 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.23 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.24 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.20 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.21 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.22 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5726 |
| Alpine:v3.23 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5726 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5726 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5726 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-5726 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-5726 |
| Ubuntu:22.04:LTS | thunderbird | 1:115.4.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-5726 |
| Ubuntu:24.04:LTS | thunderbird | 1:115.4.1+build1-0ubuntu1 | UBUNTU-CVE-2023-5726 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 119 |
| Mozilla | Firefox ESR | unspecified – before 115.4 |
| Mozilla | Thunderbird | unspecified – before 115.4.1 |