CVE-2023-3726Public exploitNetwork attack vector

Session theft via unsanitized notification template upload

Published Jan 4, 2024 · Updated Sep 24, 2025

Stored XSS in OCS Inventory NG 2.12.0 allows remote authenticated users to steal an administrator's session cookie. The ocsreports notification-template upload stores attacker-supplied HTML without neutralizing script content, which executes when an administrator views the template. Administrator access is required to change the mail template, and exploitation also requires a logged-in administrator to view it; debug mode additionally exposes a password hash.

CVSS severity6.9
Medium
EPSS probability0.54%
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 OCS Inventory NG 2.12.0 allows remote authenticated users to steal an administrator's session cookie. The ocsreports notification-template upload stores attacker-supplied HTML without neutralizing script content, which executes when an administrator views the template. Administrator access is required to change the mail template, and exploitation also requires a logged-in administrator to view it; debug mode additionally exposes a password hash.

The record

CVE
CVE-2023-3726
Published
Jan 4, 2024
Updated
Sep 24, 2025
Vendor
OCS Inventory NG
Product
OCS Inventory NG
Classifications
CWE-79, CAPEC-63, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=2.12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OCS Inventory NG · OCS Inventory NGversion=2.12.0

Published CVSS scores

6.9Fluid AttacksCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
CAPEC-63Cross-Site Scripting (XSS)
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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