How severe is CVE-2019-16983?

CVE-2019-16983 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-2019-16983 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16983?

CVE-2019-16983 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16983?

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

When was CVE-2019-16983 published?

CVE-2019-16983 was published on 2019-10-21 and last updated on 2026-06-17.

CVE-2019-16983

CVE-2019-16983 is a medium-severity vulnerability in Fusionpbx 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fusionpbx
Published: 2019-10-21
Last modified: 2026-06-17

Description

In FusionPBX up to v4.5.7, the file resources\paging.php has a paging function (called by several pages of the interface), which uses an unsanitized "param" variable constructed partially from the URL args and reflected in HTML, leading to XSS.

Frequently asked questions

What is CVE-2019-16983?: In FusionPBX up to v4.5.7, the file resources\paging.php has a paging function (called by several pages of the interface), which uses an unsanitized "param" variable constructed partially from the URL args and reflected in HTML, leading to XSS.
How severe is CVE-2019-16983?: CVE-2019-16983 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-2019-16983 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16983?: CVE-2019-16983 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16983?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-16983 published?: CVE-2019-16983 was published on 2019-10-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fusionpbx:fusionpbx:*:*:*:*:*:*:*:*

More vulnerabilities in Fusionpbx

CVE-2022-35153 — Critical (CVSS 9.8): FusionPBX 5.0.1 was discovered to contain a command injection vulnerability via /fax/fax_send.php.
CVE-2022-28055 — Critical (CVSS 9.8): Fusionpbx v4.4 and below contains a command injection vulnerability via the download email logs function.
CVE-2021-43406 — High (CVSS 8.8): An issue was discovered in FusionPBX before 4.5.30. The fax_post_size may have risky characters (it is not constrained…
CVE-2021-43405 — High (CVSS 8.8): An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained…
CVE-2021-43404 — High (CVSS 8.8): An issue was discovered in FusionPBX before 4.5.30. The FAX file name may have risky characters.
CVE-2019-16964 — High (CVSS 8.8): app/call_centers/cmd.php in the Call Center Queue Module in FusionPBX up to 4.5.7 suffers from a command injection…

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