How severe is CVE-2024-23387?

CVE-2024-23387 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-23387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23387?

CVE-2024-23387 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23387?

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

Does CVE-2024-23387 have an EU (EUVD) identifier?

Yes. CVE-2024-23387 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-20891.

When was CVE-2024-23387 published?

CVE-2024-23387 was published on 2024-01-19 and last updated on 2026-06-17.

CVE-2024-23387

CVE-2024-23387 is a medium-severity vulnerability in Fusionpbx with a CVSS 3.x base score of 4.8. 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 4.8)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-20891
Weakness: CWE-79
Affected product: Fusionpbx
Published: 2024-01-19
Last modified: 2026-06-17

Description

FusionPBX prior to 5.1.0 contains a cross-site scripting vulnerability. If this vulnerability is exploited by a remote authenticated attacker with an administrative privilege, an arbitrary script may be executed on the web browser of the user who is logging in to the product.

Frequently asked questions

What is CVE-2024-23387?: FusionPBX prior to 5.1.0 contains a cross-site scripting vulnerability. If this vulnerability is exploited by a remote authenticated attacker with an administrative privilege, an arbitrary script may be executed on the web browser of the user who is logging in to the product.
How severe is CVE-2024-23387?: CVE-2024-23387 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-23387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23387?: CVE-2024-23387 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23387?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-23387 have an EU (EUVD) identifier?: Yes. CVE-2024-23387 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-20891.
When was CVE-2024-23387 published?: CVE-2024-23387 was published on 2024-01-19 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…

All CVEs affecting Fusionpbx →

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