How severe is CVE-2020-26134?

CVE-2020-26134 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-26134 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26134?

CVE-2020-26134 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26134?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-26134 published?

CVE-2020-26134 was published on 2020-10-02 and last updated on 2026-06-17.

CVE-2020-26134

CVE-2020-26134 is a medium-severity vulnerability in Livehelperchat Live Helper Chat with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Livehelperchat Live Helper Chat
Published: 2020-10-02
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-26134?: Live Helper Chat before 3.44v allows stored XSS in chat messages with an operator via BBCode.
How severe is CVE-2020-26134?: CVE-2020-26134 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-26134 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26134?: CVE-2020-26134 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26134?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26134 published?: CVE-2020-26134 was published on 2020-10-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:livehelperchat:live_helper_chat:*:*:*:*:*:*:*:*

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