CVE-2024-23387: FusionPBX prior to 5.1.0 contains a cross-site scripting vulnerability

Q: How do I fix CVE-2024-23387?

fusionpbx: upgrade to 5.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-23387 being exploited?

CVE-2024-23387 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-23387 affect?

CVE-2024-23387 affects fusionpbx. Severity is medium (CVSS 4.8). 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 us

Q: How urgent is CVE-2024-23387?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 4.8UPGRADE

CVE-2024-23387 is a medium-severity flaw (CVSS 4.8) affecting fusionpbx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-01-19
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: fusionpbx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-19 04:15 UTCPublished CVE record published
2026-06-17 07:12 UTCUpdated Record last modified

fusionpbx fusionpbx UPGRADE

Affected: < 5.1.0

Fixed in: 5.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fusionpbx || rpm -q fusionpbx || fusionpbx --version

2. UPGRADE to 5.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fusionpbx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fusionpbx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-23387?

fusionpbx: upgrade to 5.1.0. Exact commands for each OS are on this page.

Is CVE-2024-23387 being exploited?

CVE-2024-23387 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-23387 affect?

CVE-2024-23387 affects fusionpbx. Severity is medium (CVSS 4.8). 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 us

How urgent is CVE-2024-23387?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2024-24539 MEDIUM 5.3 UPGRADE FusionPBX before 5.2.0 does not validate a session.

References

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