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TI-2026-17866 Aliases CVE-2026-22256GHSA-rjf8-2wcw-f6mp

Salvo is vulnerable to reflected XSS in the list_html function

Priority HIGH 71CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generate an file view of a folder which include a render of the current path, in which its inserted in the HTML without proper sanitation, this leads to reflected XSS using the fact that request path is decoded and normalized in the matching stage but not is inserted raw in the html view (current.path), the only constraint here is for the root path (eg. /files in the PoC example) to have a sub directory (e.g common ones styles/scripts/etc…) so that the matching return the list HTML page instead of the Not Found page. This issue has been patched in version 0.88.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00334 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed salvo (salvo-rs): 0.88.1salvo (crates.io): 0.88.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
salvo-rssalvobefore 0.88.10.88.1Patch availableCNA
—salvo (crates.io)before 0.88.10.88.1Patch availableGHSA-rjf8-2wcw-f6mp
  • salvo Vendorsalvo-rs Affected before 0.88.1 Fixed in 0.88.1 Patch available CNA
  • salvo (crates.io) Vendor— Affected before 0.88.1 Fixed in 0.88.1 Patch available GHSA-rjf8-2wcw-f6mp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:*before 0.88.1Vulnerablesalvo-rs
  • cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:* Versions before 0.88.1 Vulnerable ·salvo-rs

Remediation

  • Fix · CNA salvo (salvo-rs) Fixed in 0.88.1
  • Fix · GHSA-rjf8-2wcw-f6mp salvo (crates.io) Fixed in 0.88.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-22256
  2. 2026-10-03 Alias added: GHSA-rjf8-2wcw-f6mp

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2026-25659 Salvo Affected by Denial of Service via Unbounded Memory Allocation in Form Data Parsing CVSS 4.0HIGH 8.7
  • TI-2026-25660 Salvo has a Path Traversal in salvo-proxy::encode_url_path allows API Gateway Bypass CVSS 3.1HIGH 7.5
  • TI-2026-17867 Salvo is vulnerable to stored XSS in the list_html function by uploading files with malicious names CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences