CVE-2023-4047

Name: CVE-2023-4047
Creator: NVD / NIST
Published: 2023-08-01T15:15:09.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2023-4047 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.58%

43.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 116.0
Mozilla	Firefox	>= 102.0, < 102.14
Mozilla	Firefox	>= 115.0, < 115.1
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1839073Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html
https://www.debian.org/security/2023/dsa-5464Third Party Advisory
https://www.debian.org/security/2023/dsa-5469Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-30/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1839073Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html
https://www.debian.org/security/2023/dsa-5464Third Party Advisory
https://www.debian.org/security/2023/dsa-5469Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-30/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory

Timeline

Published: Aug 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4047?

How severe is CVE-2023-4047?

CVE-2023-4047 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4047?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4047?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST