XSS in Livehelperchat Live Helper Chat
CVE-2025-51396
A stored cross-site scripting (XSS) vulnerability in Live Helper Chat v4.60 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Telegram Bot Username parameter.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (60.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dropbox.com/scl/fi/e6z9vidj3wnzm0guzqsax/2025-05-09-02-53-20.mp4 (Exploit)
- github.com/LiveHelperChat/livehelperchat/pull/2228/commits/2056503ad96e04467ec9… (Patch)
- github.com/Thewhiteevil/CVE-2025-51396 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-51396?
- CVE-2025-51396 is a medium-severity vulnerability in Livehelperchat Live Helper Chat, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-07-21.
- How severe is CVE-2025-51396?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2025-51396 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.