CVE-2023-39516Public exploitNetwork attack vector

Account takeover via unescaped data-source debug output

Published Sep 5, 2023 · Updated Feb 25, 2026

Stored XSS in Cacti before 1.2.25 allows remote authenticated users to execute JavaScript in a privileged user's browser. The data_sources.php debug block prints rrdtool_function_create output containing an attacker-controlled data-source path directly into HTML without escaping. The attacker needs Sites/Devices/Data permission, and a same-or-higher-privileged user must open the debug view, enabling victim-account takeover or actions as that user.

CVSS severity6.1
Medium
EPSS probability0.84%
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 Cacti before 1.2.25 allows remote authenticated users to execute JavaScript in a privileged user's browser. The data_sources.php debug block prints rrdtool_function_create output containing an attacker-controlled data-source path directly into HTML without escaping. The attacker needs Sites/Devices/Data permission, and a same-or-higher-privileged user must open the debug view, enabling victim-account takeover or actions as that user.

The record

CVE
CVE-2023-39516
Published
Sep 5, 2023
Updated
Feb 25, 2026
Vendor
The Cacti Group
Product
Cacti
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.2.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Cacti Group · Cactiversion=< 1.2.25

Published CVSS scores

5.4NISTCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
6.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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