CVE-2023-1316Public exploitNetwork attack vector

Stored XSS via unsanitized system email

Published Mar 10, 2023 · Updated Mar 3, 2025

Stored XSS in osTicket before 1.16.6 allows remote authenticated users to run script in another user’s browser through a system email. The System Email update path in include/class.email.php saves the email field without sanitization and later displays the stored value. Administrator-level access is required to alter the system email, and another user must view the resulting content; execution can expose browser-accessible data or alter page content.

CVSS severity5.4
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in osTicket before 1.16.6 allows remote authenticated users to run script in another user’s browser through a system email. The System Email update path in include/class.email.php saves the email field without sanitization and later displays the stored value. Administrator-level access is required to alter the system email, and another user must view the resulting content; execution can expose browser-accessible data or alter page content.

The record

CVE
CVE-2023-1316
Published
Mar 10, 2023
Updated
Mar 3, 2025
Vendor
Enhancesoft, LLC
Product
osTicket
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <v1.16.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Enhancesoft, LLC · osTicketversion=unspecified <v1.16.6

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.5huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

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.

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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 exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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