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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Salvo Salvo
cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:*
|
0.39.0
|
0.89.3
|
References 3
https://github.com/salvo-rs/salvo/commit/7bac30e6960355c58e358e402072d4a3e5c4e1…
security-advisories@github.com
https://github.com/salvo-rs/salvo/releases/tag/v0.89.3
security-advisories@github.com
https://github.com/salvo-rs/salvo/security/advisories/GHSA-f842-phm9-p4v4
security-advisories@github.com