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Vulnerability details: VCID-e479-yqm3-wkg4
Vulnerability ID VCID-e479-yqm3-wkg4
Aliases CVE-2026-44455
GHSA-69xw-7hcm-h432
Summary Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, 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. This vulnerability is fixed in 4.12.16.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00033 https://api.first.org/data/v1/epss?cve=CVE-2026-44455
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-69xw-7hcm-h432
cvssv3.1 4.7 https://github.com/honojs/hono
generic_textual MODERATE https://github.com/honojs/hono
cvssv3.1 4.7 https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
cvssv3.1_qr MODERATE https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
generic_textual MODERATE https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
ssvc Track https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
cvssv3.1 4.7 https://nvd.nist.gov/vuln/detail/CVE-2026-44455
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-44455
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-44455
https://github.com/honojs/hono
https://nvd.nist.gov/vuln/detail/CVE-2026-44455
GHSA-69xw-7hcm-h432 https://github.com/advisories/GHSA-69xw-7hcm-h432
GHSA-69xw-7hcm-h432 https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/honojs/hono
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-14T13:45:57Z/ Found at https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-44455
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.09994
EPSS Score 0.00033
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:42:38.007330+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44455.json 38.6.0