Update dependency hono to v4.12.16 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
hono (source)	4.12.14 → 4.12.16

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hono/jsx has Unvalidated JSX Tag Names that May Allow HTML Injection

CVE-2026-44455 / GHSA-69xw-7hcm-h432

More information

Details

Summary

Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output.

When untrusted input is used as a tag name via the programmatic jsx() or createElement() APIs during server-side rendering, specially crafted values may break out of the intended element context and inject unintended HTML.

Details

When rendering JSX elements to HTML strings, attribute values are escaped and attribute names are validated. However, element tag names were previously inserted into the output without validation.

If a tag name contains characters such as <, >, quotes, or whitespace, it may alter the structure of the generated HTML.

For example, malformed tag names can:

• Break out of the intended element and introduce unintended HTML elements
• Inject attributes or event handlers into the rendered output

This issue arises when untrusted input (such as query parameters or database content) is used as JSX tag names via jsx() or createElement() during server-side rendering.

Impact

An attacker who can control tag names used in JSX rendering may inject unintended HTML into the generated output.

This may lead to:

• Injection of unexpected HTML elements or attributes
• Corruption of the HTML structure
• Cross-site scripting (XSS) when combined with unsafe usage patterns

This issue only affects applications that construct JSX tag names from untrusted input. Applications using static or allowlisted tag names are not affected.

Severity

• CVSS Score: 4.7 / 10 (Medium)
• Vector String: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

• https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
• https://github.com/advisories/GHSA-69xw-7hcm-h432

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

honojs/hono (hono)

v4.12.16

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Security fixes

This release includes fixes for the following security issues:

Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection

Affects: hono/jsx. Fixes missing validation of JSX tag names when using jsx() or createElement(), which could allow HTML injection if untrusted input is used as the tag name. GHSA-69xw-7hcm-h432

bodyLimit() can be bypassed for chunked / unknown-length requests

Affects: Body Limit Middleware. Fixes late enforcement for request bodies without a reliable Content-Length (e.g. chunked requests), where oversized requests could reach handlers and return successful responses before being rejected. GHSA-9vqf-7f2p-gf9v

v4.12.15

Compare Source

What's Changed

• fix(jwt): support single-line PEM keys by @​hiendv in #​4889

New Contributors

• @​hiendv made their first contribution in #​4889

Full Changelog: honojs/hono@v4.12.14...v4.12.15

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