6.5

CVE-2023-23601: mozilla firefox Origin Validation Error

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-23601DEBIAN-CVE-2023-23601
Published 02-06-2023Last modified 18-12-2025

Vulnerability summary

CVE-2023-23601 is a medium (CVSS 6.5) Origin Validation Error vulnerability in mozilla firefox. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 26.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.35%
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 32 · Related 10

Timeline

  1. 02-06-2023
    PublishedVulnerability first disclosed.
  2. 18-12-2025
    Last modifiedVulnerability information updated.

Description

Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

0.00 pp

From 0.35% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.35%

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< 109.0+build2-0ubuntu0.18.04.1 | < 109.0+build2-0ubuntu0.20.04.1
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
  • mozjs78All versions (No fix recorded)
Mozilla3 products
Debian2 products
  • firefox-esr< 102.7.0esr-1
  • thunderbird< 1:102.7.1-1

3 vendors · 12 products

References

11 links
Show all 11 references