Vulnerability-Lookup

GHSA-55CM-P4WW-685G

Vulnerability from github – Published: 2026-06-23 15:32 – Updated: 2026-09-24 18:24

Withdrawn 2026-09-24

Summary

Duplicate Advisory: Hono missing validation of cookie name on write path in setCookie()

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-26pp-8wgv-hjvm. This link is maintained to preserve external references.

Original Description

Hono before 4.12.12 does not validate cookie names on the write path in the setCookie(), serialize(), and serializeSigned() functions, allowing invalid characters such as control characters (e.g. \r or \n) when an application passes a user-controlled cookie name. This can produce malformed Set-Cookie header values. In modern runtimes such as Node.js and Cloudflare Workers, such invalid header values are rejected and cause a runtime error before the response is sent, so header injection or response splitting could not be reproduced; the issue primarily affects correctness and robustness, resulting in runtime errors (availability) rather than confirmed header injection.

Severity

5.3 (Medium)


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

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "hono"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.12.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-113",
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-24T18:24:42Z",
    "nvd_published_at": "2026-06-23T13:16:46Z",
    "severity": "MODERATE"
  },
  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-26pp-8wgv-hjvm. This link is maintained to preserve external references.\n\n### Original Description\nHono before 4.12.12 does not validate cookie names on the write path in the setCookie(), serialize(), and serializeSigned() functions, allowing invalid characters such as control characters (e.g. \\r or \\n) when an application passes a user-controlled cookie name. This can produce malformed Set-Cookie header values. In modern runtimes such as Node.js and Cloudflare Workers, such invalid header values are rejected and cause a runtime error before the response is sent, so header injection or response splitting could not be reproduced; the issue primarily affects correctness and robustness, resulting in runtime errors (availability) rather than confirmed header injection.",
  "id": "GHSA-55cm-p4ww-685g",
  "modified": "2026-09-24T18:24:42Z",
  "published": "2026-06-23T15:32:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-26pp-8wgv-hjvm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56762"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/hono-missing-cookie-name-validation-in-setcookie"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Duplicate Advisory: Hono missing validation of cookie name on write path in setCookie()",
  "withdrawn": "2026-09-24T18:24:42Z"
}

CVE-2026-56762 (GCVE-0-2026-56762)

Vulnerability from cvelistv5 – Published: 2026-06-23 12:13 – Updated: 2026-06-24 11:17

Title

Hono - Missing Cookie Name Validation in setCookie()

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-23 13:07 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

VulnCheck mitre root Scorecard

References

2 references

URL	Tags
https://github.com/honojs/hono/security/advisorie…	vendor-advisory
https://www.vulncheck.com/advisories/hono-missing…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Hono	Hono	Affected: 0 , < 4.12.12 (semver) Unaffected: 4.12.12 (semver) cpe:2.3:a:hono:hono::::::node.js::*

Date Public

2026-04-07 00:00

Credits

athuljayaram

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56762",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-23T13:07:54.410163Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-23T13:09:45.435Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/hono",
          "product": "Hono",
          "vendor": "Hono",
          "versions": [
            {
              "lessThan": "4.12.12",
              "status": "affected",
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              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.12.12",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
                  "versionEndExcluding": "4.12.12",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
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      ],
      "datePublic": "2026-04-07T00:00:00.000Z",
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          "lang": "en",
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      ],
      "metrics": [
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            "attackComplexity": "LOW",
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            "attackVector": "NETWORK",
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            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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      "references": [
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          "name": "GitHub Security Advisory (GHSA-26pp-8wgv-hjvm)",
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          "url": "https://github.com/honojs/hono/security/advisories/GHSA-26pp-8wgv-hjvm"
        },
        {
          "name": "VulnCheck Advisory: Hono - Missing Cookie Name Validation in setCookie()",
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/hono-missing-cookie-name-validation-in-setcookie"
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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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