Vulnerability · Published Oct 16, 2025 · Assigned by jpcert
CVE-2025-54461
Medium 5.3
In plain English
A medium-severity security flaw in ChatLuck from NEOJAPAN Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.0)5.3Medium
Exploit odds (30 days)0.3%top 73.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ChatLuck contains an insufficient granularity of access control vulnerability in Invitation of Guest Users. If exploited, an uninvited guest user may register itself as a guest user.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NEOJAPAN Inc. | ChatLuck | V6.6 R2.0 and earlier |
Weakness: CWE-1220 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N