Cross-user file disclosure via recursive parent-directory copy
Published Mar 11, 2025 · Updated Mar 12, 2025
Path traversal in OBiBa Opal before 5.1.1 allows remote authenticated users to read other users' files through the file-copy API. FilesResource validates readability only on the selected source root before recursively copying its descendants into an attacker-readable temporary directory. Any application account, including a low-privilege DataShield user, can copy /home or / and retrieve otherwise unauthorized files.
Summary
What happened
Path traversal in OBiBa Opal before 5.1.1 allows remote authenticated users to read other users' files through the file-copy API. FilesResource validates readability only on the selected source root before recursively copying its descendants into an attacker-readable temporary directory. Any application account, including a low-privilege DataShield user, can copy /home or / and retrieve otherwise unauthorized files.
The record
- CVE
- CVE-2025-27101
- Published
- Mar 11, 2025
- Updated
- Mar 12, 2025
- Vendor
- OBiBa
- Product
- Opal
- Classifications
- CWE-22, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 11, 2025CVE publishedPublication date reported by the CVE source.
- Mar 12, 2025Record 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.
- Affected versionversion=< 5.1.1
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
- GHSA-rxmx-gqjj-vhv8 authenticated file-copy proof of conceptproof of concept · demonstrated
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
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo