Medium 6.9Published Oct 16, 2025

CVE-2025-54461ChatLuck contains an insufficient granularity of access control vulnerability in Invitation of Guest Users.

Updated under an hour ago (2026-10-19 08:30 UTC)

Does this affect you?

It lists no affected products yet. Add what you run and Signals checks it as products are added.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Exploited in the last 30 days

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.

CVSS: 6.9 MEDIUM (v4.0, NVD)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness (CWE): CWE-1220
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Deferred
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

No affected products are listed yet.

References

https://jvn.jp/en/jp/JVN13030751/
https://www.chatluck.com/support/package/mainte/pchatluck-%e8%a3%bd%e5%93%81%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%80%81%e8%a4%87%e6%95%b0%e3%81%ae%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e4%b8%8a%e3%81%ae%e5%95%8f%e9%a1%8c%e3%81%ab/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.