Mozilla Firefox up to 150.0.0 Video information disclosure

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Firefox up to 150.0.0. The affected element is an unknown function of the component Video. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2026-7320. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 150.0.0. It has been rated as problematic. This issue affects some unknown processing of the component Video. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2026-7320 since 04/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/02/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 311845 (Debian dla-4562 : thunderbird - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 150.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (311845) and CERT Bund (WID-SEC-2026-1296). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Debian Linux
• Red Hat Enterprise Linux
• SUSE Linux
• IGEL OS
• SUSE openSUSE
• Mozilla Firefox
• Mozilla Firefox ESR
• Mozilla Thunderbird
• Amazon Linux 2
• RESF Rocky Linux
• Oracle Linux

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 150.0

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

• 🔒

CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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