CVE-2023-4047Public exploitNetwork attack vector

Permission grant via stale popup display time

Published Aug 1, 2023 · Updated Feb 13, 2025

Clickjacking in Mozilla Firefox before 116 and Firefox ESR before 102.14 or 115.1 allows remote attackers to obtain site permissions. PopupNotifications retains the original timeShown value when a permission panel is reshown after a tab switch, so closing a newly opened tab after the delay defeats the activation guard. A user must interact with the attacker-controlled page and click the disguised permission prompt; granted access can include geolocation, camera, or microphone permissions.

CVSS severity8.8
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Clickjacking in Mozilla Firefox before 116 and Firefox ESR before 102.14 or 115.1 allows remote attackers to obtain site permissions. PopupNotifications retains the original timeShown value when a permission panel is reshown after a tab switch, so closing a newly opened tab after the delay defeats the activation guard. A user must interact with the attacker-controlled page and click the disguised permission prompt; granted access can include geolocation, camera, or microphone permissions.

The record

CVE
CVE-2023-4047
Published
Aug 1, 2023
Updated
Feb 13, 2025
Vendor
Mozilla
Product
Firefox
Classifications
CWE-352, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <102.14
  2. Affected versionversion=0 <115.1
  3. Affected versionversion=0 <116
  4. Affected versionversion=unspecified <116

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <102.14; version=0 <115.1; version=0 <116; version=unspecified <116
Mozilla · Firefox ESRversion=unspecified <102.14; version=unspecified <115.1

Published CVSS scores

8.8UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

Public exploit references

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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