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Fencer Vulns
medium 6.1

CVE-2020-26134 json

Live Helper Chat before 3.44v allows stored XSS in chat messages with an operator via BBCode.

published 2020-10-02 6 y ago modified 2026-06-17 4 mo ago also BIT-livehelperchat-2020-26134 , EUVD-2020-18764

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

Live Helper Chat before 3.44v allows stored XSS in chat messages with an operator via BBCode.

Patch / fix

  • bitnami livehelperchat 3.44.0
  • livehelperchat live_helper_chat 3.44

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami livehelperchat
<3.44.0
3.44.0

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

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.