Salvo
CVE-2026-22256
HIGH
GHSA-rjf8-2wcw-f6mp
Severity by source
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
Salvo is a Rust web backend framework. [CVSS 8.8 HIGH]
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Salvo web framework versions before 0.88.1 with list_html function enabled; root path must contain at least one subdirectory (e.g., /files/styles/) to trigger HTML directory listing instead of 404 response; victim must click malicious link (user interaction required). Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker could exploit this flaw, reflected XSS using the fact that request path is decoded an. |
| Remediation | A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 7 days: Identify all affected systems and apply vendor patches promptly. …
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External POC / Exploit Code
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