CVE-2026-33242

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.

• CWE-22

• https://github.com/salvo-rs/salvo/commit/7bac30e6960355c58e358e402072d4a3e5c4e1bb#diff-e319bf7afcb577f7e9f4fb767005072f6335d23f306dd52e8c94f3d222610d02R20Patch
• https://github.com/salvo-rs/salvo/releases/tag/v0.89.3Product, Release Notes
• https://github.com/salvo-rs/salvo/security/advisories/GHSA-f842-phm9-p4v4Exploit, Mitigation, Vendor Advisory
• https://github.com/salvo-rs/salvo/security/advisories/GHSA-f842-phm9-p4v4Exploit, Mitigation, Vendor Advisory

Published

Mar 24, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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