Vulnerability-Lookup

CVE-2026-29086 (GCVE-0-2026-29086)

Vulnerability from cvelistv5 – Published: 2026-03-04 22:09 – Updated: 2026-03-05 15:42

Title

Hono: Cookie Attribute Injection via Unsanitized domain and path in setCookie()

Summary

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\r), or newline characters (\n) in the domain and path options when constructing the Set-Cookie header. Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields. This issue has been patched in version 4.12.4.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE

CWE-1113 - Inappropriate Comment Style

Assigner

GitHub_M

References

URL

Tags

	https://github.com/honojs/hono/security/advisorie…	x_refsource_CONFIRM
	https://github.com/honojs/hono/commit/44ae0c8cc4d…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	honojs	hono	Affected: < 4.12.4

Show details on NVD website

JSON

To clipboard

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GHSA-5PQ2-9X2X-5P6W

Vulnerability from github – Published: 2026-03-04 19:49 – Updated: 2026-03-05 15:26

Summary

Hono Vulnerable to Cookie Attribute Injection via Unsanitized domain and path in setCookie()

Details

Summary

The setCookie() utility did not validate semicolons (;), carriage returns (\r), or newline characters (\n) in the domain and path options when constructing the Set-Cookie header.

Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields.

Details

setCookie() builds the Set-Cookie header by concatenating option values. While the cookie value itself is URL-encoded, the domain and path options were previously interpolated without rejecting unsafe characters.

Including ;, \r, or \n in these fields could result in unintended additional attributes (such as SameSite, Secure, Domain, or Path) being appended to the cookie header.

Modern runtimes prevent full header injection via CRLF, so this issue is limited to attribute-level manipulation within a single Set-Cookie header.

The issue has been fixed by rejecting these characters in the domain and path options.

Impact

An attacker may be able to manipulate cookie attributes if an application passes user-controlled input directly into the domain or path options of setCookie().

This could affect cookie scoping or security attributes depending on browser behavior. Exploitation requires application-level misuse of cookie options.

Severity ?

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "hono"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.12.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29086"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1113",
      "CWE-113"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T19:49:14Z",
    "nvd_published_at": "2026-03-04T23:16:10Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nThe `setCookie()` utility did not validate semicolons (`;`), carriage returns (`\\r`), or newline characters (`\\n`) in the `domain` and `path` options when constructing the `Set-Cookie` header.\n\nBecause cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields.\n\n## Details\n\n`setCookie()` builds the `Set-Cookie` header by concatenating option values. While the cookie value itself is URL-encoded, the `domain` and `path` options were previously interpolated without rejecting unsafe characters.\n\nIncluding `;`, `\\r`, or `\\n` in these fields could result in unintended additional attributes (such as `SameSite`, `Secure`, `Domain`, or `Path`) being appended to the cookie header.\n\nModern runtimes prevent full header injection via CRLF, so this issue is limited to attribute-level manipulation within a single `Set-Cookie` header.\n\nThe issue has been fixed by rejecting these characters in the `domain` and `path` options.\n\n## Impact\n\nAn attacker may be able to manipulate cookie attributes if an application passes user-controlled input directly into the `domain` or `path` options of `setCookie()`.\n\nThis could affect cookie scoping or security attributes depending on browser behavior. Exploitation requires application-level misuse of cookie options.",
  "id": "GHSA-5pq2-9x2x-5p6w",
  "modified": "2026-03-05T15:26:43Z",
  "published": "2026-03-04T19:49:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-5pq2-9x2x-5p6w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29086"
    },
    {
      "type": "WEB",
      "url": "https://github.com/honojs/hono/commit/44ae0c8cc4d5ab2bed529127a4ac72e1483ad073"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/honojs/hono"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Hono Vulnerable to Cookie Attribute Injection via Unsanitized domain and path in setCookie()"
}

FKIE_CVE-2026-29086

Vulnerability from fkie_nvd - Published: 2026-03-04 23:16 - Updated: 2026-03-06 18:00

Severity ?

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/honojs/hono/commit/44ae0c8cc4d5ab2bed529127a4ac72e1483ad073	Patch
	security-advisories@github.com	https://github.com/honojs/hono/security/advisories/GHSA-5pq2-9x2x-5p6w	Vendor Advisory

Impacted products

	Vendor	Product	Version
	hono	hono	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "8ADA9966-4575-41CC-8905-E1F4E4CB5CA6",
              "versionEndExcluding": "4.12.4",
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            }
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          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\\r), or newline characters (\\n) in the domain and path options when constructing the Set-Cookie header. Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields. This issue has been patched in version 4.12.4."
    },
    {
      "lang": "es",
      "value": "Hono es un framework de aplicaci\u00f3n web que proporciona soporte para cualquier entorno de ejecuci\u00f3n de JavaScript. Antes de la versi\u00f3n 4.12.4, la utilidad setCookie() no validaba los puntos y coma (;), los retornos de carro (\\r) o los caracteres de nueva l\u00ednea (\\n) en las opciones de dominio y ruta al construir la cabecera Set-Cookie. Dado que los atributos de las cookies est\u00e1n delimitados por puntos y coma, esto podr\u00eda permitir la inyecci\u00f3n de atributos de cookie adicionales si se pasaba una entrada no confiable a estos campos. Este problema ha sido parcheado en la versi\u00f3n 4.12.4."
    }
  ],
  "id": "CVE-2026-29086",
  "lastModified": "2026-03-06T18:00:25.880",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
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        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-04T23:16:10.593",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
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    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-5pq2-9x2x-5p6w"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1113"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-29086 (GCVE-0-2026-29086)

GHSA-5PQ2-9X2X-5P6W

Summary

Details

Impact

FKIE_CVE-2026-29086

Tags

Sightings

Nomenclature