Unauthenticated file disclosure via log path traversal
Published Jan 7, 2026 · Updated Jan 7, 2026
Path traversal in Yoco Payments 3.9.0 and earlier allows remote attackers to read arbitrary server files through a public REST endpoint. The /wp-json/yoco/logs callback passes the file parameter directly to file_exists() and file_get_contents() under WC_LOG_DIR, while a substring check for yoco fails to constrain the canonical path. The route’s permit callback always returns true, so no authentication or user interaction is required; traversal can expose configuration files and credentials without modifying data or interrupting service.
Summary
What happened
Path traversal in Yoco Payments 3.9.0 and earlier allows remote attackers to read arbitrary server files through a public REST endpoint. The /wp-json/yoco/logs callback passes the file parameter directly to file_exists() and file_get_contents() under WC_LOG_DIR, while a substring check for yoco fails to constrain the canonical path. The route’s permit callback always returns true, so no authentication or user interaction is required; traversal can expose configuration files and credentials without modifying data or interrupting service.
The record
- CVE
- CVE-2025-13801
- Published
- Jan 7, 2026
- Updated
- Jan 7, 2026
- Vendor
- Yoco
- Product
- Yoco Payments
- Classifications
- CWE-22, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 7, 2026CVE publishedPublication date reported by the CVE source.
- Jan 7, 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=* <=3.8.8
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
- 2fsec Yoco Payments path-traversal proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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