CVE-2023-25439: Stored Cross Site Scripting (XSS) vulnerability in Square Pig FusionInvoice 2023-1.0, allows attackers to exec

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MEDIUM 6.1DOWNGRADE

CVE-2023-25439 is a medium-severity flaw (CVSS 6.1) affecting fusioninvoice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stored Cross Site Scripting (XSS) vulnerability in Square Pig FusionInvoice 2023-1.0, allows attackers to execute arbitrary code via the description or content fields to the expenses, tasks, and customer details.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-05-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: squarepiginteractive

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

Am I affected?

Timeline

2023-05-25 20:15 UTCPublished CVE record published
2026-06-17 05:41 UTCUpdated Record last modified

squarepiginteractive fusioninvoice DOWNGRADE

Affected: 2023-1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023-1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2023-1.0 (Debian / Ubuntu)

apt-cache madison fusioninvoice sudo apt install fusioninvoice=<VERSION_BEFORE_2023-1.0> sudo apt-mark hold fusioninvoice

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fusioninvoice sudo dnf downgrade fusioninvoice-<VERSION_BEFORE_2023-1.0> sudo dnf versionlock add fusioninvoice

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: FusionInvoice 2023-1.0 - Stored XSS (Cross-Site Scripting)

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-2023-25439?

fusioninvoice: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-25439 being exploited?

CVE-2023-25439 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-2023-25439 affect?

CVE-2023-25439 affects fusioninvoice. Severity is medium (CVSS 6.1). Stored Cross Site Scripting (XSS) vulnerability in Square Pig FusionInvoice 2023-1.0, allows attackers to execute arbitrary code via the description or content fields to the expenses, tasks, and customer details.

How urgent is CVE-2023-25439?

Priority 47/100. Public exploit reference

References

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