PT-2026-51372 · Webp Sh · Webp Server Go

Katriel Moses · Publicado 2026-06-22 · Atualizado 2026-06-22 · CVE-2026-53779

Mitre

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Correção

Path traversal

Enumeração de Fraquezas

CWE-22

Identificadores relacionados

CVE-2026-53779

Produtos afetados

Webp Server Go

Referências · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-53779 · Nota de Segurança
• https://vulncheck.com/advisories/webp-server-go-path-traversal-via-backslash-encoding-on-windows · Nota
• https://github.com/webp-sh/webp_server_go/commit/eb3b5f9289b331cb639cd610b0d1c532d2cc24e0 · Correção
• https://github.com/webp-sh/webp_server_go/pull/451 · Nota