CVE-2025-60503: A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimateP

This month

HIGH 8.7DOWNGRADE

CVE-2025-60503 is a high-severity flaw (CVSS 8.7) affecting ultimatepos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimatePOS 4.8 where input submitted in the purchase functionality is reflected without proper escaping in the admin log panel page in the 'reference No.' field. This flaw allows an authenticated attacker to execute arbitrary JavaScript in the context of an administrator's browser session, which could lead to session hijacking or other malicious

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ultimatefosters

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

Am I affected?

Timeline

2025-11-03 16:15 UTCPublished CVE record published
2026-06-17 09:49 UTCUpdated Record last modified

ultimatefosters ultimatepos DOWNGRADE

Affected: 4.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.8 (Debian / Ubuntu)

apt-cache madison ultimatepos sudo apt install ultimatepos=<VERSION_BEFORE_4.8> sudo apt-mark hold ultimatepos

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

dnf --showduplicates list ultimatepos sudo dnf downgrade ultimatepos-<VERSION_BEFORE_4.8> sudo dnf versionlock add ultimatepos

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.

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-2025-60503?

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

Is CVE-2025-60503 being exploited?

CVE-2025-60503 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-2025-60503 affect?

CVE-2025-60503 affects ultimatepos. Severity is high (CVSS 8.7). A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimatePOS 4.8 where input submitted in the purchase functionality is reflected without proper escaping in the admin log panel page in the

How urgent is CVE-2025-60503?

Priority 44/100. High severity; Public exploit reference

References

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