How severe is CVE-2019-11408?

CVE-2019-11408 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-2019-11408 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11408?

CVE-2019-11408 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11408?

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

When was CVE-2019-11408 published?

CVE-2019-11408 was published on 2019-06-17 and last updated on 2026-06-17.

CVE-2019-11408

CVE-2019-11408 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: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fusionpbx
Published: 2019-06-17
Last modified: 2026-06-17

Description

XSS in app/operator_panel/index_inc.php in the Operator Panel module in FusionPBX 4.4.3 allows remote unauthenticated attackers to inject arbitrary JavaScript characters by placing a phone call using a specially crafted caller ID number. This can further lead to remote code execution by chaining this vulnerability with a command injection vulnerability also present in FusionPBX.

Frequently asked questions

What is CVE-2019-11408?: XSS in app/operator_panel/index_inc.php in the Operator Panel module in FusionPBX 4.4.3 allows remote unauthenticated attackers to inject arbitrary JavaScript characters by placing a phone call using a specially crafted caller ID number. This can further lead to remote code execution by chaining this vulnerability with a command injection vulnerability also present in FusionPBX.
How severe is CVE-2019-11408?: CVE-2019-11408 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-2019-11408 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11408?: CVE-2019-11408 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11408?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-11408 published?: CVE-2019-11408 was published on 2019-06-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fusionpbx:fusionpbx:4.4.3:*:*:*:*:*:*:*

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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