Build-secret disclosure via failed frontend process diagnostics
Published May 19, 2026 · Updated May 19, 2026
Information disclosure in Vaadin Flow build plugins allows local users to read build-process secrets from failed frontend build logs. The BuildFrontendUtil Vite runner used zt-exec, whose nonzero-exit error path placed the child process's complete environment in standard build output. A failed frontend build and access to CI logs or archived artifacts are required; exposed values include clear-text credentials supplied as build secrets.
Summary
What happened
Information disclosure in Vaadin Flow build plugins allows local users to read build-process secrets from failed frontend build logs. The BuildFrontendUtil Vite runner used zt-exec, whose nonzero-exit error path placed the child process's complete environment in standard build output. A failed frontend build and access to CI logs or archived artifacts are required; exposed values include clear-text credentials supplied as build secrets.
The record
- CVE
- CVE-2026-7860
- Published
- May 19, 2026
- Updated
- May 19, 2026
- Vendor
- Vaadin
- Product
- Vaadin Flow
- Classifications
- CWE-209, T1552.001
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 19, 2026CVE publishedPublication date reported by the CVE source.
- May 19, 2026Record 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.
- Affected versionversion=23.0.0 <=23.6.10
- Affected versionversion=24.0.0 <=24.10.3
- Affected versionversion=25.0.0 <=25.1.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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
See the directory against your own environment.
Your stack
Check the software in your environment
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