Packages / hono / Security

ModerateVulnerabilityGHSA-v8w9-8mx6-g223Published 11 Mar 2026

Hono vulnerable to Prototype Pollution possible through __proto__ key allowed in parseBody({ dot: true })

Affected releases · hono

  • 4.x4.0.0 – 4.12.6Fixed in 4.12.7
  • 3.x and older0.0.1 – 3.12.12No fix, no longer updated

On 4.x, the newest line:

npm install hono@4.12.7
4.x

  1. Affected

    4.0.0 – 4.12.6

    153 releases

  2. Fixed

    4.12.7 – 4.13.13

    42 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?

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What happens

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