Authenticated arbitrary file write via unconfined generator paths
Published Aug 13, 2026 · Updated Aug 18, 2026
Path traversal in Dromara lamp-cloud 5.10.0 and earlier allows remote authenticated users to write generated files outside the output directory. The generator concatenates outputDir, projectPrefix, and transformed parent values without normalization or base-directory confinement before FileOutputStream writes each template. Any valid login token reaches the endpoint without an elevated-role check; writable configuration, classpath, or startup locations can enable code execution.
Summary
What happened
Path traversal in Dromara lamp-cloud 5.10.0 and earlier allows remote authenticated users to write generated files outside the output directory. The generator concatenates outputDir, projectPrefix, and transformed parent values without normalization or base-directory confinement before FileOutputStream writes each template. Any valid login token reaches the endpoint without an elevated-role check; writable configuration, classpath, or startup locations can enable code execution.
The record
- CVE
- CVE-2026-19756
- Published
- Aug 13, 2026
- Updated
- Aug 18, 2026
- Vendor
- Dromara
- Product
- lamp-cloud
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 18, 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=5.0
- Affected versionversion=5.1
- Affected versionversion=5.10.0
- Affected versionversion=5.2
- Affected versionversion=5.3
- Affected versionversion=5.4
- Affected versionversion=5.5
- Affected versionversion=5.6
- Affected versionversion=5.7
- Affected versionversion=5.8
- Affected versionversion=5.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- Authenticated generator path-traversal requestproof of concept · unverified
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Technologies
Your stack
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Your stack
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