CVE-2023-23601: Mozilla Firefox · Vulnerability
Affects Mozilla FirefoxSource CVE Database V5
Not known to be exploited : upgrade to 109 or 102.7 when convenient.
Data as of 26 Oct 2026, 06:26 UTC
Rated Medium by the CNA (mozilla) · No CVSS score from NVD or the CNA
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 109, 102.7
Exploitation evidence
Disclosed: evidence found.
CVE published 2 Jun 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Upgrade Mozilla Firefox to 109 or 102.7.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox | Affected
| Fixed in
|
AI-suggested
Mozilla has released official fixes for this vulnerability in Firefox 109 and Firefox ESR 102.7. Users and administrators should update affected Firefox and Thunderbird installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official updates.
Description
CVE-2023-23601 is a vulnerability in Mozilla Firefox and Thunderbird where dragging a URL from a cross-origin iframe into the same tab triggers a navigation. This behavior could enable website spoofing attacks. The issue affects Firefox versions prior to 109, Firefox ESR versions prior to 102.7, and Thunderbird versions prior to 102.7. Mozilla fixed this vulnerability in Firefox 109 and Firefox ESR 102.7.