LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image…
Priority MEDIUM 50CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-674.
Summary
LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the "<?php ?>" substring.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00702 53rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:linuxserver:heimdall_application_dashboard:*:*:*:*:*:*:*:* | — | — | LinuxServer |
- cpe:2.3:a:linuxserver:heimdall_application_dashboard:*:*:*:*:*:*:*:* Versions — — ·LinuxServer
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-51803
- 2026-10-03 Alias added: GHSA-7822-f4vj-qh7p
References
Sources
- CVE-2023-51803 · CVE Program
- CVE-2023-51803 · NVD
- FIRST EPSS
- GHSA-7822-f4vj-qh7p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences