OS command injection in FusionPBX Dialplan Editor
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
FusionPBX up to and including 5.4.4, 5.5.7 and 5.6.5 is affected. Improper neutralization of special elements in the Dialplan Editor component (CWE-78) lets an attacker inject operating system commands through the dialplan.php file. A remote attacker with high privileges can trigger the flaw without user interaction. A public exploit has been published.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
A flaw has been found in FusionPBX up to 5.4.4/5.5.7/5.6.5. The affected element is an unknown function of the file app/dialplans/resources/classes/dialplan.php of the component Dialplan Editor. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| — | FusionPBX | 5.4.0; 5.4.1; 5.4.2; 5.4.3; 5.4.4; 5.5.0; 5.5.1; 5.5.2; 5.5.3; 5.5.4; 5.5.5; 5.5.6; 5.5.7; 5.6.0; 5.6.1; 5.6.2; 5.6.3; 5.6.4; 5.6.5 | — | No fix listed | CNA |
- FusionPBX Vendor— Affected 5.4.0; 5.4.1; 5.4.2; 5.4.3; 5.4.4; 5.5.0; 5.5.1; 5.5.2; 5.5.3; 5.5.4; 5.5.5; 5.5.6; 5.5.7; 5.6.0; 5.6.1; 5.6.2; 5.6.3; 5.6.4; 5.6.5 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for FusionPBX.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-19 Threatist record created from CVE-2026-112195
- 2026-10-20 Alias added: GHSA-34pp-fm34-4f9q
- 2026-10-25 EPSS moved to the 90th–95th percentile
References
Sources
- CVE-2026-112195 · CVE Program
- CVE-2026-112195 · NVD
- FIRST EPSS
- GHSA-34pp-fm34-4f9q · GitHub Advisory Database · CC BY 4.0
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