CVE-2025-55033Network attack vector

Script execution via dragged JavaScript URL

Published Aug 19, 2025 · Updated Apr 13, 2026

Cross-site scripting in Mozilla Focus for iOS before 142 allows remote attackers to run script by inducing a JavaScript-link drag to the URL bar. The URL-bar drop path accepts a dragged javascript: link as executable navigation rather than rejecting the active-content scheme; Mozilla has not disclosed the responsible function. Exploitation requires a user to drag the malicious link into the URL bar, and successful script execution can expose or alter content in the resulting web context.

CVSS severity6.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Mozilla Focus for iOS before 142 allows remote attackers to run script by inducing a JavaScript-link drag to the URL bar. The URL-bar drop path accepts a dragged javascript: link as executable navigation rather than rejecting the active-content scheme; Mozilla has not disclosed the responsible function. Exploitation requires a user to drag the malicious link into the URL bar, and successful script execution can expose or alter content in the resulting web context.

The record

CVE
CVE-2025-55033
Published
Aug 19, 2025
Updated
Apr 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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