How severe is CVE-2026-22257?

CVE-2026-22257 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-22257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22257?

CVE-2026-22257 affects Salvo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-22257 have an EU (EUVD) identifier?

Yes. CVE-2026-22257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1423.

When was CVE-2026-22257 published?

CVE-2026-22257 was published on 2026-01-08 and last updated on 2026-06-17.

CVE-2026-22257

CVE-2026-22257 is a high-severity vulnerability in Salvo with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1423
Weakness: CWE-79
Affected product: Salvo
Published: 2026-01-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-22257?: 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.
How severe is CVE-2026-22257?: CVE-2026-22257 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-22257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22257?: CVE-2026-22257 affects Salvo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-22257 have an EU (EUVD) identifier?: Yes. CVE-2026-22257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1423.
When was CVE-2026-22257 published?: CVE-2026-22257 was published on 2026-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:*

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