What is the CVSS score of CVE-2026-22257?

CVE-2026-22257 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Salvo are affected by CVE-2026-22257?

Organizations using Salvo face significant risk from CVE-2026-22257, a cross-site scripting vulnerability rated CVSS 8.8.. A patch is available.

Is there a public PoC exploit available for CVE-2026-22257?

Yes, a public proof-of-concept exploit is available for CVE-2026-22257. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-22257?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Verify anti-CSRF tokens and content security policies are enforced.

Salvo CVE-2026-22257

HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-01-08 security-advisories@github.com

GHSA-54m3-5fxr-2f3j

XSS Salvo

8.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Mar 05, 2026 - 17:42 vuln.today

Public exploit code

Patch released

Mar 05, 2026 - 17:42 nvd

Patch available

CVE Published

Jan 08, 2026 - 19:16 nvd

HIGH 8.8

DescriptionGitHub Advisory

Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generates a file view of a folder without sanitizing the files or folders names, this may potentially lead to XSS in cases where a website allow the access to public files using this feature and anyone can upload a file. This issue has been patched in version 0.88.1.

AnalysisAI

Salvo is a Rust web backend framework. [CVSS 8.8 HIGH]

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Salvo. Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generates a file view of a folder without sanitizing the files or folders names, this may potentially lead to XSS in cases where a website allow the access to public files using this feature and anyone can upload a file. This issue has been patched in version 0.88.1.

RemediationAI

A vendor patch is available — apply it immediately. Fixed in version 0.88.1.. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.