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Vulnerability record · CVE-2026-33242 · published 24 March 2026

CVE-2026-33242: Salvo path traversal vulnerability

Salvo · Salvo

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.

7.5 CVSS 3.1 High EPSS 0.55% · top 56.1% CWE-22 · Path traversal
7.5CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/salvo-rs/salvo/commit/7bac30e6960355c58e358e402072d4a3e5c4e1bb#diff-e319bf7afcb577f7e9f4fb767005072f6 Patch
https://github.com/salvo-rs/salvo/releases/tag/v0.89.3 ProductRelease Notes
https://github.com/salvo-rs/salvo/security/advisories/GHSA-f842-phm9-p4v4 ExploitMitigationVendor Advisory
https://github.com/salvo-rs/salvo/security/advisories/GHSA-f842-phm9-p4v4 ExploitMitigationVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-33242), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.