CVE-2025-55033 Drag and drop gestures in Focus for iOS could allow JavaScript links to be executed incorrectly

What is CVE-2025-55033?

CVE-2025-55033 is a medium-severity cross-site scripting vulnerability in Mozilla Focus for iOS, published on 19 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Dragging JavaScript links to the URL bar in Focus for iOS could be utilized to run malicious scripts, potentially resulting in XSS attacks. This vulnerability was fixed in Focus for iOS 142.

Weakness: CWE-79

Which versions are affected by CVE-2025-55033?

It affects 1 product.

Products include Mozilla Firefox Focus.

How do I fix CVE-2025-55033?

No fix has been published for CVE-2025-55033 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-55033 being exploited?

There is no known exploitation of CVE-2025-55033 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Focus for iOS

• CVE-2024-10474 Security feature bypass in Focus for iOS Critical 9.1
• CVE-2023-29534 Security feature bypass in Firefox for Android Critical 9.1
• CVE-2024-1563 Race condition in Focus for iOS High 8.1
• CVE-2024-0605 Race condition in Focus for iOS High 7.5
• CVE-2023-25743 Security feature bypass in Firefox High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f484-2jqj-73ch.