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CVE-2026-22257

Salvo cross-site scripting (XSS)

8.8 HIGHPublic exploitEPSS 0.33%
  1. Published8 Jan 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

Affected products

Salvo< 0.88.1

Frequently asked

Is CVE-2026-22257 being actively exploited?

CVE-2026-22257 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.33%.

How severe is CVE-2026-22257?

CVE-2026-22257 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.33% probability of exploitation.

Which products are affected by CVE-2026-22257?

Affected products include Salvo.

How do I fix CVE-2026-22257?

Upgrade affected software to a fixed version, for example Salvo 0.88.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-22257 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.