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CVE-2026-22257

29
FAUCET Score

CVE-2026-22257 affects the Salvo Rust web backend framework prior to version 0.88.1. It is a Cross-Site Scripting (XSS) vulnerability where the list_html function, used for generating file views, fails to sanitize file and folder names. This allows for XSS if a website using Salvo permits public file access and attackers can upload malicious file names. This vulnerability is rated High severity (CVSS 8.8), indicating it can be exploited remotely with low complexity, requiring user interaction, and potentially leading to high confidentiality impact and low integrity/availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.88.1CPE matchmatch criteria
cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
5.3
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 26th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: salvoFixed in: 0.88.1

Vendor Advisories (1)

rustGHSA-54m3-5fxr-2f3jhigh

Salvo is vulnerable to stored XSS in the list_html function by uploading files with malicious names

Jan 8, 2026

References

github.com / salvo-rs/salvo/blob/16efeba312a274739606ce76366d921768628654/crates/serve-static/src/dir.rs
Patch
github.com / salvo-rs/salvo/security/advisories/GHSA-54m3-5fxr-2f3j
ExploitVendor Advisory