🛡️ CVE-2026-54290 on npm (Root.io) — hono

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2026-54290 in @rootio/hono - Patched by Root

Root has patched CVE-2026-54290 in the @rootio/hono package for Root:npm. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-54290 as tracked by npm (Root.io), for the package hono. The fix is available in version 4.12.12-root.io.2; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity low, availability none. (rating taken from the base CVE record.)

Weakness class

ROOT-APP-NPM-CVE-2026-54290 is classified as CWE-942: Permissive Cross-domain Security Policy with Untrusted Domains. The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.

Affected software

ROOT-APP-NPM-CVE-2026-54290 is recorded against 2 packages.

  • @rootio/hono (fixed in 4.12.12-root.io.2)
  • hono (fixed in 4.12.12-aikido.2)

Timeline and source

Published on 27 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-27
Updated 2026-08-12
Modified 2026-07-27
Fix URL N/A

Affected Packages

Software From version Fixed in
@rootio/hono — 4.12.12-root.io.2
hono — 4.12.12-aikido.2

References

N/A

Site Security Check

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ROOT-APP-NPM-CVE-2026-54290 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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