CVE-2023-49145Network attack vector

Authenticated session script execution via evaluated URL parameters

Published Nov 27, 2023 · Updated Feb 13, 2025

DOM-based XSS in Apache NiFi 0.7.0 through 1.23.2 allows remote authenticated users to execute JavaScript via a crafted URL. The Jolt Transform custom UI controller passes the disconnectedNodeAcknowledged and editable URL parameters to JavaScript eval() instead of comparing their string values. Exploitation requires permission to configure a JoltTransformJSON Processor and a victim with that access to open the URL; code runs in that victim's session.

CVSS severity5.4
Medium
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in Apache NiFi 0.7.0 through 1.23.2 allows remote authenticated users to execute JavaScript via a crafted URL. The Jolt Transform custom UI controller passes the disconnectedNodeAcknowledged and editable URL parameters to JavaScript eval() instead of comparing their string values. Exploitation requires permission to configure a JoltTransformJSON Processor and a victim with that access to open the URL; code runs in that victim's session.

The record

CVE
CVE-2023-49145
Published
Nov 27, 2023
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache NiFi
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=0.7.0 <=1.23.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache NiFiversion=0.7.0 <=1.23.2

Published CVSS scores

7.9GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
5.4NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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
Privilegesauthenticated
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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