CVE-2019-19852Network attack vector

Browser script execution via CEL date fields

Published Mar 16, 2020 · Updated Aug 5, 2024

XSS in the CEL module of Sangoma FreePBX and PBXact 13, 14, and 15 allows remote authenticated users to inject JavaScript. The Call Event Logging report at admin/config.php?display=cel renders attacker-supplied date-field values without neutralizing script content. Administrator privileges are required to submit the payload, and a user must open the affected report for the script to run in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XSS in the CEL module of Sangoma FreePBX and PBXact 13, 14, and 15 allows remote authenticated users to inject JavaScript. The Call Event Logging report at admin/config.php?display=cel renders attacker-supplied date-field values without neutralizing script content. Administrator privileges are required to submit the payload, and a user must open the affected report for the script to run in that user's browser.

The record

CVE
CVE-2019-19852
Published
Mar 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
1.8SangomaCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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