Vaadin Flow CVE-2026-7860

Q: What is the CVSS score of CVE-2026-7860?

CVE-2026-7860 has a CVSS 4.0 base score of 1.6 (Low). CVSS vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/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:N/AU:N/R:A/V:C/RE:L/U:Green. EPSS exploitation probability: 0.0%.

EUVD-2026-30891 LOW

Error Message Information Leak (CWE-209)

2026-05-19 Vaadin

GHSA-j8mx-j73w-9mxw

Information Disclosure

1.6

CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/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:N/AU:N/R:A/V:C/RE:L/U:Green

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

Scope

Lifecycle Timeline

Source Code Evidence Fetched

May 19, 2026 - 12:04 vuln.today

Analysis Generated

May 19, 2026 - 12:04 vuln.today

DescriptionNVD

A possible information disclosure vulnerability exists in the Vaadin Maven plugin and Vaadin Gradle plugin that exposes the full set of environment variables in build logs whenever the frontend build process exits with a non-zero status. Because the build environment may contain credentials supplied as secrets, any failed frontend build can expose those secrets in clear text in CI logs and archived build artifacts.

Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:

Product version Vaadin 23.0.0 - 23.6.9 Vaadin 24.0.0 - 24.10.3 Vaadin 25.0.0 - 25.1.4

Mitigation Upgrade to 23.6.10 Upgrade to 24.10.4 or newer Upgrade to 25.1.5 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, or 25 version.

ArtifactsMaven coordinatesVulnerable versionsFixed versioncom.vaadin:flow-plugin-base23.0.0 - 23.6.10≥23.6.11com.vaadin:flow-plugin-base24.0.0 - 24.10.3≥24.10.4com.vaadin:flow-plugin-base25.0.0 - 25.1.4≥25.1.5com.vaadin:flow-maven-plugin23.0.0 - 23.6.10≥23.6.11com.vaadin:flow-maven-plugin24.0.0 - 24.10.3≥24.10.4com.vaadin:flow-maven-plugin25.0.0 - 25.1.4≥25.1.5com.vaadin:flow-gradle-plugin24.0.0 - 24.10.3≥24.10.4com.vaadin:flow-gradle-plugin25.0.0 - 25.1.4≥25.1.5

AnalysisAI

Vaadin Flow's Maven and Gradle build plugins expose all process-level environment variables - including CI-injected secrets and credentials - in plaintext build logs whenever the frontend build process exits with a non-zero status code. Affected are com.vaadin:flow-maven-plugin, flow-gradle-plugin, and flow-plugin-base across Vaadin 23.0.0-23.6.9, 24.0.0-24.10.3, and 25.0.0-25.1.4. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-7860 vulnerability details – vuln.today

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