How severe is CVE-2019-16956?

CVE-2019-16956 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-2019-16956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16956?

CVE-2019-16956 affects Solarwinds Web Help Desk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16956?

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

When was CVE-2019-16956 published?

CVE-2019-16956 was published on 2021-01-04 and last updated on 2026-06-17.

CVE-2019-16956

CVE-2019-16956 is a medium-severity vulnerability in Solarwinds Web Help Desk 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)
CVSS v2: 3.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Solarwinds Web Help Desk
Published: 2021-01-04
Last modified: 2026-06-17

Description

SolarWinds Web Help Desk 12.7.0 allows XSS via the Request Type parameter of a ticket.

Frequently asked questions

What is CVE-2019-16956?: SolarWinds Web Help Desk 12.7.0 allows XSS via the Request Type parameter of a ticket.
How severe is CVE-2019-16956?: CVE-2019-16956 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-2019-16956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16956?: CVE-2019-16956 affects Solarwinds Web Help Desk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-16956 published?: CVE-2019-16956 was published on 2021-01-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:solarwinds:web_help_desk:12.7.0:*:*:*:*:*:*:*

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