Unauthenticated file read via path traversal
Published Mar 5, 2026 · Updated Mar 5, 2026
Path traversal in Fonoster VoiceServer 0.5.5 before 0.6.1 allows remote attackers to read arbitrary server files via crafted media URLs. The serveFiles handler joins req.params.file to config.pathToFiles and passes the result to fs.readFile without validating that the resolved path remains inside the media directory. No authentication or user interaction is required; successful requests disclose files readable by the VoiceServer process.
Summary
What happened
Path traversal in Fonoster VoiceServer 0.5.5 before 0.6.1 allows remote attackers to read arbitrary server files via crafted media URLs. The serveFiles handler joins req.params.file to config.pathToFiles and passes the result to fs.readFile without validating that the resolved path remains inside the media directory. No authentication or user interaction is required; successful requests disclose files readable by the VoiceServer process.
The record
- CVE
- CVE-2024-43035
- Published
- Mar 5, 2026
- Updated
- Mar 5, 2026
- Vendor
- Fonoster
- Product
- Fonoster
- Classifications
- CWE-24, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 5, 2026CVE publishedPublication date reported by the CVE source.
- Mar 5, 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=0.5.5 <0.6.1
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.
Public exploit references
- ZeroPath VoiceServer traversal curl proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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