CVE-2026-73662: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in FreePBX music
FreePBX is an open source IP PBX. From 17.0.1 until 17.0.7, the FreePBX Music on Hold module permits dangerous command-line options for /usr/bin/mpg123 and other allowed players in validateCustomConfiguration() in Music.class.php. An authenticated administrator can use options that write files, open control channels, or create Asterisk call files because applicationUsesDisallowedPlayerOption() does not reject those arguments, resulting in arbitrary command execution as the asterisk service user. This issue is fixed in version 17.0.7.
AI Analysis
Technical Summary
The FreePBX Music on Hold module permits dangerous command-line options for /usr/bin/mpg123 and other allowed players in the validateCustomConfiguration() function within Music.class.php. The function applicationUsesDisallowedPlayerOption() fails to reject options that can write files, open control channels, or create Asterisk call files. An authenticated administrator can leverage this flaw to execute arbitrary commands with the privileges of the asterisk service user. The vulnerability affects versions >=17.0.1 and <17.0.7 and is resolved in 17.0.7.
Potential Impact
Successful exploitation allows an authenticated administrator to execute arbitrary OS commands as the asterisk service user. This could lead to unauthorized file writes, control channel manipulation, or creation of Asterisk call files, potentially compromising the PBX system's integrity and availability.
Mitigation Recommendations
Upgrade FreePBX Music on Hold module to version 17.0.7 or later where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
CVE-2026-73662: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in FreePBX music
Description
FreePBX is an open source IP PBX. From 17.0.1 until 17.0.7, the FreePBX Music on Hold module permits dangerous command-line options for /usr/bin/mpg123 and other allowed players in validateCustomConfiguration() in Music.class.php. An authenticated administrator can use options that write files, open control channels, or create Asterisk call files because applicationUsesDisallowedPlayerOption() does not reject those arguments, resulting in arbitrary command execution as the asterisk service user. This issue is fixed in version 17.0.7.
CVSS v4.0
Score 7.6high
Affected software
FreePBX
music
pkg:github/freepbx/musicRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The FreePBX Music on Hold module permits dangerous command-line options for /usr/bin/mpg123 and other allowed players in the validateCustomConfiguration() function within Music.class.php. The function applicationUsesDisallowedPlayerOption() fails to reject options that can write files, open control channels, or create Asterisk call files. An authenticated administrator can leverage this flaw to execute arbitrary commands with the privileges of the asterisk service user. The vulnerability affects versions >=17.0.1 and <17.0.7 and is resolved in 17.0.7.
Potential Impact
Successful exploitation allows an authenticated administrator to execute arbitrary OS commands as the asterisk service user. This could lead to unauthorized file writes, control channel manipulation, or creation of Asterisk call files, potentially compromising the PBX system's integrity and availability.
Mitigation Recommendations
Upgrade FreePBX Music on Hold module to version 17.0.7 or later where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-13T14:04:09.606Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7e3a17bf8831d539d70455
Added to database: 08/13/2026, 21:41:43 UTC
Last enriched: 08/21/2026, 13:12:00 UTC
Last updated: 09/27/2026, 13:47:47 UTC
Views: 50
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