How severe is CVE-2026-24473?

CVE-2026-24473 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-24473 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24473?

CVE-2026-24473 affects Hono. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24473?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-24473 have an EU (EUVD) identifier?

Yes. CVE-2026-24473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4751.

When was CVE-2026-24473 published?

CVE-2026-24473 was published on 2026-01-27 and last updated on 2026-06-17.

CVE-2026-24473

CVE-2026-24473 is a medium-severity vulnerability in Hono with a CVSS 3.x base score of 5.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.3
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4751
Weakness: CWE-200
Affected product: Hono
Published: 2026-01-27
Last modified: 2026-06-17

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, Serve static Middleware for the Cloudflare Workers adapter contains an information disclosure vulnerability that may allow attackers to read arbitrary keys from the Workers environment. Improper validation of user-controlled paths can result in unintended access to internal asset keys. Version 4.11.7 contains a patch for the issue.

Frequently asked questions

What is CVE-2026-24473?: Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, Serve static Middleware for the Cloudflare Workers adapter contains an information disclosure vulnerability that may allow attackers to read arbitrary keys from the Workers environment. Improper validation of user-controlled paths can result in unintended access to internal asset keys. Version 4.11.7 contains a patch for the issue.
How severe is CVE-2026-24473?: CVE-2026-24473 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-24473 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24473?: CVE-2026-24473 affects Hono. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24473?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-24473 have an EU (EUVD) identifier?: Yes. CVE-2026-24473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4751.
When was CVE-2026-24473 published?: CVE-2026-24473 was published on 2026-01-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

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