CVE-2023-25499Network attack vector

Information disclosure via hidden component state transmission

Published Jun 22, 2023 · Updated Dec 5, 2024

Information exposure in Vaadin Flow Server and Vaadin Framework allows remote authenticated users to read non-visible UI content. StateNode change collection and pending JavaScript delivery send updates for effectively invisible nodes instead of filtering them from the client response. Exploitation requires an authenticated application session and user interaction; disclosure is limited to state placed in hidden server-side UI components.

CVSS severity5.7
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Vaadin Flow Server and Vaadin Framework allows remote authenticated users to read non-visible UI content. StateNode change collection and pending JavaScript delivery send updates for effectively invisible nodes instead of filtering them from the client response. Exploitation requires an authenticated application session and user interaction; disclosure is limited to state placed in hidden server-side UI components.

The record

CVE
CVE-2023-25499
Published
Jun 22, 2023
Updated
Dec 5, 2024
Vendor
Vaadin
Product
Flow Server
Classifications
CWE-200
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 2024Record 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=1.0.0 <=24.0.0.beta1
  2. Affected versionversion=1.1.0 <=2.8.9
  3. Affected versionversion=23.0.0 <=23.3.10
  4. Affected versionversion=24.0.0 <=24.0.7
  5. Affected versionversion=24.1.0.alpha1 <=24.1.0.beta1
  6. Affected versionversion=3.3.0 <=9.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Vaadin · Flow Serverversion=1.0.0 <=24.0.0.beta1; version=1.1.0 <=2.8.9; version=23.0.0 <=23.3.10; version=24.0.0 <=24.0.7; version=24.1.0.alpha1 <=24.1.0.beta1; version=3.3.0 <=9.1.0
Vaadin · Vaadin Frameworkversion=10.0.0 <=10.0.22; version=11.0.0 <=14.10.0; version=15.0.0 <=22.0.28; version=23.0.0 <=23.3.12; version=24.0.0 <=24.0.5; version=24.1.0.alpha1 <=24.1.0.beta1

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.7Vaadin Ltd.CVSS:3.1/AV:N/AC:L/PR:L/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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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