CVE-2026-53779
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk32th percentile — higher than 32% of all known CVEs
Summary
WebP Server Go version 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to read files outside the configured IMG_PATH directory. Attackers can exploit percent-encoded backslashes (%5C) to bypass sanitization in handler/router.go.
Risk Assessment
This vulnerability may lead to the exposure of sensitive data on the server, posing a significant security risk to the organization.
Recommendation
It is recommended to update WebP Server Go to the latest version to mitigate this vulnerability and implement additional security measures, such as restricting file access.
Original NVD description (English source)
WebP Server Go through 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to read files outside the configured IMG_PATH directory by sending requests with percent-encoded backslashes (%5C) that bypass the path.Clean() sanitization in handler/router.go. Attackers can exploit the discrepancy between Go's forward-slash-only path normalization and Windows file system APIs that treat backslashes and forward slashes as equivalent to access arbitrary files on the host filesystem accessible to the server process.