CVE-2026-33242

The record

Salvo is a Rust web framework. Versions 0.39.0 through 0.89.2 have a Path Traversal and Access Control Bypass vulnerability in the salvo-proxy component. The vulnerability allows an unauthenticated external attacker to bypass proxy routing constraints and access unintended backend paths (e.g., protected endpoints or administrative dashboards). This issue stems from the encode_url_path function, which fails to normalize "../" sequences and inadvertently forwards them verbatim to the upstream server by not re-encoding the "." character. Version 0.89.3 contains a patch.

Affected packages

Related vulnerabilities

• GHSA-f842-phm9-p4v4 Salvo has a Path Traversal in salvo-proxy::encode_url_path allows API Gateway Bypass Same vulnerability
• CVE-2026-33241 Salvo is a Rust web framework. Also affects salvo
• GHSA-pp9r-xg4c-8j4x Salvo Affected by Denial of Service via Unbounded Memory Allocation in Form Data Parsing Also affects salvo
• GHSA-rjf8-2wcw-f6mp Salvo is vulnerable to reflected XSS in the list_html function Also affects salvo
• GHSA-54m3-5fxr-2f3j Salvo is vulnerable to stored XSS in the list_html function by uploading files with… Also affects salvo
• CVE-2026-22256 Salvo is a Rust web backend framework. Also affects salvo
• CVE-2026-22257 Salvo is a Rust web backend framework. Also affects salvo
• CVE-2026-81163 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')… CWE-22