8.3

CVE-2024-1555: mozilla firefox Authentication Bypass by Spoofing

CVSS: 8.3v3.1HighAnalyzed
AliasesUBUNTU-CVE-2024-1555CGA-53v3-9j59-7q9xCGA-98hp-5g8q-6vp6
Published 20-02-2024Last modified 15-11-2024
Open JSON

Vulnerability summary

CVE-2024-1555 is a high (CVSS 8.3) Authentication Bypass by Spoofing vulnerability in mozilla firefox. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 39.9% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2024:13728-1OPENSUSE-SU-2024:14572-1USN-6649-1CGA-3CH3-3GGF-3MV8

Timeline

  1. 20-02-2024
    PublishedVulnerability first disclosed.
  2. 15-11-2024
    Last modifiedVulnerability information updated.

Description

When opening a website using the `firefox://` protocol handler, SameSite cookies were not properly respected. This vulnerability affects Firefox < 123.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

0.00 pp

From 0.48% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.48%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu7 products
  • firefox< 123.0+build3-0ubuntu0.20.04.1
  • mozjs102All versions (No fix recorded)
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Chainguard1 product
  • firefox-esr< 123-r0
Mozilla1 product
  • firefox≥ unspecified, < 123 | < 123.0

3 vendors · 9 products

References

6 links