CVE-2023-4053: mozilla firefox Link Following
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-4053DEBIAN-CVE-2023-4053CGA-3w92-4pfp-x5qmCGA-c7hm-gc4g-f6vj
Published 01-08-2023Last modified 18-12-2025
Vulnerability summary
CVE-2023-4053 is a medium (CVSS 6.5) Link Following vulnerability in mozilla firefox. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.8% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.77%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 24 · Related 9MGASA-2023-0266OPENSUSE-SU-2024:13124-1OPENSUSE-SU-2024:13202-1OPENSUSE-SU-2024:14572-1RHSA-2023:4945RHSA-2023:4946RHSA-2023:4947RHSA-2023:4948RHSA-2023:4949RHSA-2023:4950RHSA-2023:4951RHSA-2023:4952RHSA-2023:4954RHSA-2023:4955RHSA-2023:4956RHSA-2023:4957RHSA-2023:4958RHSA-2023:4959RHSA-2023:5019SUSE-SU-2023:3519-1SUSE-SU-2023:3559-1SUSE-SU-2023:3562-1SUSE-SU-2023:3664-1USN-6267-1CGA-298W-HPRF-RPJR
Timeline
- 01-08-2023PublishedVulnerability first disclosed.
- 18-12-2025Last modifiedVulnerability information updated.
Description
A website could have obscured the full screen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 116, Firefox ESR < 115.2, and Thunderbird < 115.2.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- OSV · ChainguardEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.77%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.77% on 20-09-2026
20-09-202620-10-2026
EPSS score0.77%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu7 products
- firefox< 116.0+build2-0ubuntu0.20.04.2
- mozjs102All versions (No fix recorded)
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 116 | < 116.0
- firefox_esr≥ unspecified, < 115.2
- thunderbird≥ unspecified, < 115.2
Debian2 products
- firefox-esr< 115.2.0esr-1
- thunderbird< 1:115.2.0-1
Chainguard1 product
- firefox-esr< 116.0-r0
4 vendors · 13 products
