How severe is CVE-2019-15501?

CVE-2019-15501 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-2019-15501 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15501?

CVE-2019-15501 affects Lsoft Listserv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15501?

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

When was CVE-2019-15501 published?

CVE-2019-15501 was published on 2019-08-26 and last updated on 2026-06-17.

CVE-2019-15501

CVE-2019-15501 is a medium-severity vulnerability in Lsoft Listserv 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: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Lsoft Listserv
Published: 2019-08-26
Last modified: 2026-06-17

Description

Reflected cross site scripting (XSS) in L-Soft LISTSERV before 16.5-2018a exists via the /scripts/wa.exe OK parameter.

Frequently asked questions

What is CVE-2019-15501?: Reflected cross site scripting (XSS) in L-Soft LISTSERV before 16.5-2018a exists via the /scripts/wa.exe OK parameter.
How severe is CVE-2019-15501?: CVE-2019-15501 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-2019-15501 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15501?: CVE-2019-15501 affects Lsoft Listserv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15501?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15501 published?: CVE-2019-15501 was published on 2019-08-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lsoft:listserv:*:*:*:*:*:*:*:*

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