EUVD-2026-45001Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Network-reachable API with low complexity, but exploitation needs a PERM_WRITE caller so PR:L; injection escapes the app into OS command execution, giving scope change and full CIA impact.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Frogman provides headless PBX control through MCP and HTTP API. Prior to 1.6.2, fm_dialplan_apply accepted template parameters including greeting, dest, url, extension, code, and file, and Tools/DialplanApply.php wrote Dialplan/Templates.php output to extensions_custom.conf while only Dialplan/TemplateBase.php:38-42 sanitized contextName(), allowing a PERM_WRITE caller using confirm:true to inject arbitrary Asterisk directives such as System(), Set(SHELL(...)), Goto, or Macro. This issue is fixed in version 1.6.2.
AnalysisAI
Code injection in Frogman before 1.6.2 lets an authenticated PERM_WRITE caller of the MCP/HTTP dialplan API inject arbitrary Asterisk directives - including System() and Set(SHELL(...)) - into extensions_custom.conf, yielding remote command execution on the PBX host. The flaw stems from fm_dialplan_apply sanitizing only the context name while passing template parameters such as greeting, dest, url, extension, code, and file into generated dialplan text unchecked. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an API caller holding the PERM_WRITE permission who invokes fm_dialplan_apply with confirm:true against a Frogman instance prior to 1.6.2; the payload is delivered through the template parameters greeting, dest, url, extension, code, or file, which pre-1.6.2 are interpolated into extensions_custom.conf without sanitization (only contextName() was sanitized). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H = 9.9) is internally consistent with the description: network-reachable API, low complexity, a scope change reflecting escape from the PBX application into OS command execution, and full CIA impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained a Frogman API token with PERM_WRITE (or an insider with that role) calls fm_dialplan_apply with confirm:true and slips a payload containing a newline plus exten => s,1,System(...) into a template parameter such as greeting or dest. Frogman writes the crafted lines into extensions_custom.conf, and when Asterisk processes that dialplan the System()/SHELL() directive runs the attacker's OS command on the PBX host. … |
| Remediation | Vendor-released patch: 1.6.2 - upgrade Frogman to v1.6.2 or later (https://github.com/mwtcmi/frogman/releases/tag/v1.6.2), which adds the validateParams() enforcement and the rejectDangerous() control-character guard shown in commit 36a05ffa2df1d256b6f6f7c3b66ef77ebe3e458a; review advisory GHSA-pxfc-q72v-jh8m for details. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Frogman and identify which deployments have user accounts with dialplan API write permissions; restrict these accounts to essential personnel and disable API access where possible. …
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