CVE-2026-33242

Name: CVE-2026-33242
Creator: NVD / NIST
Published: 2026-03-24T00:16:29.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2026-33242 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.56%

42.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Salvo	Salvo	>= 0.39.0, < 0.89.3

References

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

Timeline

Published: Mar 24, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33242?

How severe is CVE-2026-33242?

CVE-2026-33242 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33242?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33242?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST