Packages / hono / Security

ModerateVulnerabilityGHSA-2gcr-mfcq-wcc3Published 4 Jun 2026

Hono: app.mount() strips mount prefix using undecoded path, causing incorrect routing for percent-encoded paths

Affected releases · hono

  • 4.x4.0.0 – 4.12.20Fixed in 4.12.21
  • 3.x and older0.0.1 – 3.12.12No fix, no longer updated

On 4.x, the newest line:

npm install hono@4.12.21
4.x

  1. Affected

    4.0.0 – 4.12.20

    167 releases

  2. Fixed

    4.12.21 – 4.13.13

    28 releases, latest

3.x

  1. Affected

    3.0.0 – 3.12.12

    92 releases

2.x

  1. Affected

    2.0.0 – 2.7.8

    49 releases

1.x

  1. Affected

    1.0.0 – 1.6.4

    29 releases

0.x

  1. Affected

    0.0.1 – 0.5.10

    45 releases

410 stable releases of hono, oldest to newest, one row per major.

Is your project affected?

Paste your package.json, or type the range you declare for hono. It is read in your browser and sent nowhere.

What happens

The full text is not stored yet. Read it on osv.dev.