Medium severity · published Jul 27, 2025
CVE-2025-54597
LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter
6.1
CVSS
0.6%
EPSS
No
On KEV
Description
LinuxServer.io Heimdall before 2.7.3 allows XSS via the q parameter.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
Heimdall · LinuxServer
before 2.7.3 · source: vendor
HA
Heimdall Application Dashboard · Linuxserver
before 2.7.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-54597
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-54597
Patch
https://github.com/linuxserver/Heimdall/commit/d1a96dd752ba30dc56380400dd2587d8abb8e9d1
Patch
https://github.com/linuxserver/Heimdall/compare/v2.7.2...v2.7.3
More from Heimdall
3.4
CVE-2026-107449
linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via…