CyberSecBulletin
CVE-2026-107588NVD status: Awaiting Analysis

vaadin: Improper Neutralization of Input During Web Page Generation

Published Updated By the CyberSecBulletin desk

CVE-2026-107588 is a high-severity improper neutralization of input during web page generation vulnerability in vaadin, with a CVSS 4.0 base score of 8.4 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, but only if a user takes part, for example by opening a link or file. The record lists versions 23.6.16, 24.4.24, 24.7.16 as the first without the flaw, so updating vaadin to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.52% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update vaadin to 23.6.16 or 24.4.24 or 24.7.16 or 24.9.23, whichever matches your release line, or a later version.
  2. Update vaadin-charts-flow to 23.6.16 or 24.4.24 or 24.7.15 or 24.9.23, whichever matches your release line, or a later version.
  3. Update vaadin-charts-flow-svg-generator to 23.6.16 or 24.4.24 or 24.7.15 or 24.9.23, whichever matches your release line, or a later version.
  4. Read the advisory on github.com for workarounds and exact fixed builds.
  5. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
Vaadinvaadin22.0.0 up to, but not including, 23.6.16; 24.0.0 up to, but not including, 24.4.24; 24.5.0 up to, but not including, 24.7.16; 24.8.0 up to, but not including, 24.9.23; 24.10.0 up to, but not including, 24.10.11; 25.0.0 through 25.0.13; 25.1.0 through 25.1.13; 25.2.0 up to, but not including, 25.2.10; and 1 more ranges23.6.16, 24.4.24, 24.7.16, 24.9.23, 24.10.11, 25.2.10
Vaadinvaadin-charts-flow22.0.0 up to, but not including, 23.6.16; 24.0.0 up to, but not including, 24.4.24; 24.5.0 up to, but not including, 24.7.15; 24.8.0 up to, but not including, 24.9.23; 24.10.0 up to, but not including, 24.10.11; 25.0.0 through 25.0.13; 25.1.0 through 25.1.13; 25.2.0 up to, but not including, 25.2.10; and 1 more ranges23.6.16, 24.4.24, 24.7.15, 24.9.23, 24.10.11, 25.2.10
Vaadinvaadin-charts-flow-svg-generator21.0.0 up to, but not including, 23.6.16; 24.0.0 up to, but not including, 24.4.24; 24.5.0 up to, but not including, 24.7.15; 24.8.0 up to, but not including, 24.9.23; 24.10.0 up to, but not including, 24.10.11; 25.0.0 through 25.0.13; 25.1.0 through 25.1.13; 25.2.0 up to, but not including, 25.2.10; and 1 more ranges23.6.16, 24.4.24, 24.7.15, 24.9.23, 24.10.11, 25.2.10
Vaadin@vaadin/charts22.0.0 up to, but not including, 23.6.7; 24.0.0 up to, but not including, 24.4.19; 24.5.0 up to, but not including, 24.7.13; 24.8.0 up to, but not including, 24.9.19; 24.10.0 up to, but not including, 24.10.7; 25.0.0 through 25.0.13; 25.1.0 through 25.1.14; 25.2.0 up to, but not including, 25.2.14; and 1 more ranges23.6.7, 24.4.19, 24.7.13, 24.9.19, 24.10.7, 25.2.14

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Attack requirements
NoneThe attack does not depend on a particular deployment or configuration.
Privileges required
LowA basic user account is enough.
User interaction
ActiveA user must deliberately do something unusual, such as dismissing a warning.
Confidentiality (vulnerable system)
HighSerious loss of confidentiality on the vulnerable system.
Integrity (vulnerable system)
HighSerious loss of integrity on the vulnerable system.
Availability (vulnerable system)
NoneNo loss of availability on the vulnerable system.
Confidentiality (other systems)
LowLimited loss of confidentiality on systems beyond the vulnerable one.
Integrity (other systems)
LowLimited loss of integrity on systems beyond the vulnerable one.
Availability (other systems)
NoneNo loss of availability on systems beyond the vulnerable one.

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Scored by CNA (vaadin.com).

Official description

Vaadin Charts renders charts with the Highcharts library and pins an exact version of it, 9.2.2 in Vaadin 22 to 24 and 12.2.0 in Vaadin 25, so an application cannot remove these vulnerabilities by upgrading Highcharts on its own. Highsoft disclosed several vulnerabilities in that library that are reachable through the chart configuration: writes to Object.prototype through dotted series.keys paths, and cross-site scripting through credits.href, through breadcrumbs.style, through HTML text parsing while printing, and through xlink:href attributes in exported charts. An application is affected where data an attacker controls reaches the chart configuration, for example through additionalOptions, through updateConfiguration(), or through text options that accept markup. The fixed Vaadin versions apply Highsoft's recommended workarounds to the bundled Highcharts when it loads, and keep the same Highcharts version. Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include: Product version Vaadin 22.0.0 - 23.6.15 Vaadin 24.0.0 - 24.4.23 Vaadin 24.5.0 - 24.7.15 Vaadin 24.8.0 - 24.9.22 Vaadin 24.10.0 - 24.10.10 Vaadin 25.0.0 - 25.2.9 Vaadin 25.3.0 Mitigation Upgrade to 23.6.16 Upgrade to 24.4.24 Upgrade to 24.7.16 Upgrade to 24.9.23 Upgrade to 24.10.11 Upgrade to 25.2.10 Upgrade to 25.3.1 or newer Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version. Artifacts Maven coordinates / Vulnerable versions / Fixed version com.vaadin:vaadin / 22.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin / 24.0.0 - 24.4.23 / >=24.4.24 com.vaadin:vaadin / 24.5.0 - 24.7.15 / >=24.7.16 com.vaadin:vaadin / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin / 25.3.0 / >=25.3.1 com.vaadin:vaadin-charts-flow / 22.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin-charts-flow / 24.0.0 - 24.4.22 / >=24.4.24 com.vaadin:vaadin-charts-flow / 24.5.0 - 24.7.14 / >=24.7.15 com.vaadin:vaadin-charts-flow / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin-charts-flow / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin-charts-flow / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.3.0 / >=25.3.1 com.vaadin:vaadin-charts-flow-svg-generator / 21.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin-charts-flow-svg-generator / 24.0.0 - 24.4.22 / >=24.4.24 com.vaadin:vaadin-charts-flow-svg-generator / 24.5.0 - 24.7.14 / >=24.7.15 com.vaadin:vaadin-charts-flow-svg-generator / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin-charts-flow-svg-generator / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin-charts-flow-svg-generator / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.3.0 / >=25.3.1 npm packages npm package / Vulnerable versions / Fixed version @vaadin/charts / 22.0.0 - 23.6.6 / >=23.6.7 @vaadin/charts / 24.0.0 - 24.4.18 / >=24.4.19 @vaadin/charts / 24.5.0 - 24.7.12 / >=24.7.13 @vaadin/charts / 24.8.0 - 24.9.18 / >=24.9.19 @vaadin/charts / 24.10.0 - 24.10.6 / >=24.10.7 @vaadin/charts / 25.0.0 - 25.0.13 / >=25.2.14 @vaadin/charts / 25.1.0 - 25.1.14 / >=25.2.14 @vaadin/charts / 25.2.0 - 25.2.13 / >=25.2.14 @vaadin/charts / 25.3.0 / >=25.3.1

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Input During Web Page Generation

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

How developers prevent this class of flaw

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples of libraries and frameworks that make it easier to generate properly encoded output include Microsoft's Anti-XSS library, the OWASP ESAPI Encoding module, and Apache Wicket.
  • Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

More Improper Neutralization of Input During Web Page Generation vulnerabilities (CWE-79)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in vaadin

All vaadin vulnerabilities

Recent Improper Neutralization of Input During Web Page Generation vulnerabilities

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