CVE-2025-54597: LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter.

Q: How do I fix CVE-2025-54597?

heimdall application dashboard: upgrade to 2.7.3. Exact commands for each OS are on this page.

Q: Is CVE-2025-54597 being exploited?

CVE-2025-54597 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-2025-54597 affect?

CVE-2025-54597 affects heimdall application dashboard. Severity is high (CVSS 7.2). LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter.

Q: How urgent is CVE-2025-54597?

Priority 47/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.2REMOTEWATCHLISTUPGRADE

CVE-2025-54597 is a high-severity flaw (CVSS 7.2) affecting heimdall application dashboard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-07-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: linuxserver

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

Am I affected?

Timeline

2025-07-27 03:15 UTCPublished CVE record published
2026-06-17 09:40 UTCUpdated Record last modified

linuxserver heimdall application dashboard UPGRADE

Affected: < 2.7.3

Fixed in: 2.7.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy heimdall-application-dashboard || rpm -q heimdall-application-dashboard || heimdall-application-dashboard --version

2. UPGRADE to 2.7.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade heimdall-application-dashboard

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade heimdall-application-dashboard

Note

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

Public exploits and detection

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

Nuclei scan template: Heimdall Application Dashboard < 2.7.3 - Reflected XSS

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-2025-54597?

heimdall application dashboard: upgrade to 2.7.3. Exact commands for each OS are on this page.

Is CVE-2025-54597 being exploited?

CVE-2025-54597 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-2025-54597 affect?

CVE-2025-54597 affects heimdall application dashboard. Severity is high (CVSS 7.2). LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter.

How urgent is CVE-2025-54597?

Priority 47/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

References

← Back to latest CVEs