Security readout for executives and security teams
Plain-English summary
CVE-2019-19552 is a stored cross-site scripting issue in Sangoma FreePBX user management. A privileged user can place malicious script content in a user's Display Name. When another user, such as an administrator, opens the User Management screen, the script can run in that victim's browser session.
Executive priority
Treat this as a targeted administrative-console risk, not a broad internet worm risk. Prioritize updates where FreePBX administration is shared, internet-reachable, or used by less-trusted operators.
Technical view
The issue affects FreePBX userman versions 13.0.76.43 through 15.0.20 at /admin/config.php?display=userman. The vulnerable field is Display Name. The source describes execution when the main User Management screen renders the stored value, causing code to execute in the context of the viewing user's account.
Likely exposure
Exposure is likely limited to FreePBX administrator interfaces running the affected userman module versions, especially where multiple privileged users can edit user profiles or the admin site is reachable beyond trusted administrators.
Exploitation context
No provided source or KEV entry indicates active exploitation. Abuse requires sufficient privileges to edit a user's Display Name, then a victim user visiting the User Management screen.
Researcher notes
The public bundle lacks CVSS, CWE, patch-version detail, and exploitation evidence. Analysis should stay scoped to stored XSS in FreePBX userman Display Name rendering and avoid assuming broader FreePBX compromise paths.
Mitigation direction
- Check Sangoma FreePBX guidance for the fixed userman release.
- Upgrade affected userman versions through normal FreePBX module update channels.
- Restrict FreePBX administrator access to trusted networks and users.
- Limit who can edit user profile Display Name values.
- Review existing Display Name fields for unexpected HTML or script content.
Validation and detection
- Inventory FreePBX systems and record installed userman module versions.
- Compare versions against affected range 13.0.76.43 through 15.0.20.
- Confirm administrative interfaces are not exposed to untrusted networks.
- Review user profile change history for suspicious Display Name edits.
- Verify users with profile-edit privileges are intended and current.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2019-19552 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wiki.freepbx.org/display/FOP/2019-12-03+Multiple+XSS+VulnerabilitiesCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.