Cross-site Scripting (XSS) - Stored in livehelperchat/livehelperchat

published 2021-12-28 4 y ago modified 2026-06-17 4 mo ago also BIT-livehelperchat-2021-4179 , EUVD-2021-34040

cvss: 6.6; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Patch / fix

fixed in 2 links 2

bitnami livehelperchat 3.91.0
livehelperchat livehelperchat/livehelperchat 3.91

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/8df06513-c57d-4a55-9798-0a1f6c153535 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.6	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N
OSV	3.0	6.6	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Affected packages

ecosystem	package	affected	fixed in
bitnami	livehelperchat	<3.91.0	3.91.0

Affected products

livehelperchat livehelperchat/livehelperchat

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /livehelperchat/livehelperchat/commit/c3881fb528af349bf47f9ccbf83c994087faa3e6
patch, third-party-advisory, web
huntr.dev /bounties/8df06513-c57d-4a55-9798-0a1f6c153535
exploit, issue-tracking, patch, third-party-advisory, web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary