How severe is CVE-2025-51401?

CVE-2025-51401 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-51401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-51401?

CVE-2025-51401 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-51401?

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

Does CVE-2025-51401 have an EU (EUVD) identifier?

Yes. CVE-2025-51401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22145.

When was CVE-2025-51401 published?

CVE-2025-51401 was published on 2025-07-21 and last updated on 2026-06-17.

CVE-2025-51401

CVE-2025-51401 is a medium-severity vulnerability in Livehelperchat Live Helper Chat with a CVSS 3.x base score of 5.4. 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 5.4)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22145
Weakness: CWE-79
Affected product: Livehelperchat Live Helper Chat
Published: 2025-07-21
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability in the chat transfer function of Live Helper Chat v4.60 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the operator name parameter.

Frequently asked questions

What is CVE-2025-51401?: A stored cross-site scripting (XSS) vulnerability in the chat transfer function of Live Helper Chat v4.60 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the operator name parameter.
How severe is CVE-2025-51401?: CVE-2025-51401 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-51401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-51401?: CVE-2025-51401 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-51401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-51401 have an EU (EUVD) identifier?: Yes. CVE-2025-51401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22145.
When was CVE-2025-51401 published?: CVE-2025-51401 was published on 2025-07-21 and last updated on 2026-06-17.

References

Affected products (1)

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

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