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Fencer Intel
medium 6.6

CVE-2021-4175 json

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

published 4y ago modified 4mo ago also BIT-livehelperchat-2021-4175 , EUVD-2021-34037

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 46%
public exploits
0
none known

Summary

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

Patch / fix

  • bitnami livehelperchat 3.91.0
  • livehelperchat live_helper_chat 3.91

Is CVE-2021-4175 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/8a7d16e0-9a46-4710-a029-c89c33c01528 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 6.6 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
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:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

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

Sources

Fencer Intel 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.