Vulnerability-Lookup

GHSA-7GMJ-H9XC-MCXC

Vulnerability from github – Published: 2026-03-03 06:31 – Updated: 2026-03-04 20:15

Summary

mailparser vulnerable to Cross-site Scripting

Details

Versions of the package mailparser before 3.9.3 are vulnerable to Cross-site Scripting (XSS) via the textToHtml() function due to the improper sanitisation of URLs in the email content. An attacker can execute arbitrary scripts in victim browsers by adding extra quote " to the URL with embedded malicious JavaScript code.

Severity

6.1 (Medium)


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

2.0 (Low)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "mailparser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-3455"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T20:15:58Z",
    "nvd_published_at": "2026-03-03T05:17:25Z",
    "severity": "LOW"
  },
  "details": "Versions of the package mailparser before 3.9.3 are vulnerable to Cross-site Scripting (XSS) via the textToHtml() function due to the improper sanitisation of URLs in the email content. An attacker can execute arbitrary scripts in victim browsers by adding extra quote  \" to the URL with embedded malicious JavaScript code.",
  "id": "GHSA-7gmj-h9xc-mcxc",
  "modified": "2026-03-04T20:15:58Z",
  "published": "2026-03-03T06:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3455"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodemailer/mailparser/issues/412"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd4d5411b08"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nodemailer/mailparser"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "mailparser vulnerable to Cross-site Scripting"
}

CVE-2026-3455 (GCVE-0-2026-3455)

Vulnerability from cvelistv5 – Published: 2026-03-03 05:00 – Updated: 2026-03-03 15:17

Summary

Severity

6.1 (Medium)


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

CWE

CWE-79 - Cross-site Scripting (XSS)

Assigner

snyk

References

4 references

URL	Tags
https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-…
https://github.com/nodemailer/mailparser/commit/9…
https://gist.github.com/hayageek/7fcb225e3b1ea9a3…
https://github.com/nodemailer/mailparser/issues/412

Impacted products

1 product

Vendor	Product	Version
n/a	mailparser	Affected: 0 , < 3.9.3 (semver)

Credits

Ravishanker Kusuma

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3455",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-03T15:07:11.759930Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-03T15:17:56.714Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mailparser",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "3.9.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ravishanker Kusuma"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Versions of the package mailparser before 3.9.3 are vulnerable to Cross-site Scripting (XSS) via the textToHtml() function due to the improper sanitisation of URLs in the email content. An attacker can execute arbitrary scripts in victim browsers by adding extra quote  \" to the URL with embedded malicious JavaScript code."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P",
            "version": "3.1"
          },
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "PROOF_OF_CONCEPT",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "Cross-site Scripting (XSS)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-03T05:00:11.753Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "url": "https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032"
        },
        {
          "url": "https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd4d5411b08"
        },
        {
          "url": "https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a"
        },
        {
          "url": "https://github.com/nodemailer/mailparser/issues/412"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2026-3455",
    "datePublished": "2026-03-03T05:00:11.753Z",
    "dateReserved": "2026-03-02T18:41:43.509Z",
    "dateUpdated": "2026-03-03T15:17:56.714Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-7GMJ-H9XC-MCXC

CVE-2026-3455 (GCVE-0-2026-3455)

Tags

Sightings

Nomenclature