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    2 vulnerabilities by butlerx

    CVE-2026-49864 (GCVE-0-2026-49864)

    Vulnerability from nvd – Published: 2026-08-13 19:10 – Updated: 2026-08-13 19:10
    VLAI
    Title
    wetty vulnerable to DOM XSS via file-download filename
    Summary
    wetty provides terminal access in browser over http/https. Prior to version 3.0.4, the wetty client decodes a base64 filename from the file-download escape sequence and interpolates it raw into a Toastify HTML string (`escapeMarkup: false`). Any output the victim renders - a `cat`'d file, a tailed log, an SSH MOTD, a `curl` response - that contains `\x1b[5i...:...\x1b[4i` runs script in the wetty origin and types attacker-chosen keystrokes into the victim's SSH session. Version 3.0.4 fixes the issue.
    Severity
    8.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    butlerx wetty Affected: < 3.0.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "wetty",
          "vendor": "butlerx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "wetty provides terminal access in browser over http/https. Prior to version 3.0.4, the wetty client decodes a base64 filename from the file-download escape sequence and interpolates it raw into a Toastify HTML string (`escapeMarkup: false`). Any output the victim renders - a `cat`\u0027d file, a tailed log, an SSH MOTD, a `curl` response - that contains `\\x1b[5i...:...\\x1b[4i` runs script in the wetty origin and types attacker-chosen keystrokes into the victim\u0027s SSH session. Version 3.0.4 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-13T19:10:41.037Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/butlerx/wetty/security/advisories/GHSA-p26j-h7wj-r568",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/butlerx/wetty/security/advisories/GHSA-p26j-h7wj-r568"
        }
      ],
      "source": {
        "advisory": "GHSA-p26j-h7wj-r568",
        "discovery": "UNKNOWN"
      },
      "title": "wetty vulnerable to DOM XSS via file-download filename"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-49864",
    "datePublished": "2026-08-13T19:10:41.037Z",
    "dateReserved": "2026-06-01T22:03:19.640Z",
    "dateUpdated": "2026-08-13T19:10:41.037Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-49864 (GCVE-0-2026-49864)

    Vulnerability from cvelistv5 – Published: 2026-08-13 19:10 – Updated: 2026-08-13 19:10
    VLAI
    Title
    wetty vulnerable to DOM XSS via file-download filename
    Summary
    wetty provides terminal access in browser over http/https. Prior to version 3.0.4, the wetty client decodes a base64 filename from the file-download escape sequence and interpolates it raw into a Toastify HTML string (`escapeMarkup: false`). Any output the victim renders - a `cat`'d file, a tailed log, an SSH MOTD, a `curl` response - that contains `\x1b[5i...:...\x1b[4i` runs script in the wetty origin and types attacker-chosen keystrokes into the victim's SSH session. Version 3.0.4 fixes the issue.
    Severity
    8.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    butlerx wetty Affected: < 3.0.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "wetty",
          "vendor": "butlerx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "wetty provides terminal access in browser over http/https. Prior to version 3.0.4, the wetty client decodes a base64 filename from the file-download escape sequence and interpolates it raw into a Toastify HTML string (`escapeMarkup: false`). Any output the victim renders - a `cat`\u0027d file, a tailed log, an SSH MOTD, a `curl` response - that contains `\\x1b[5i...:...\\x1b[4i` runs script in the wetty origin and types attacker-chosen keystrokes into the victim\u0027s SSH session. Version 3.0.4 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-13T19:10:41.037Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/butlerx/wetty/security/advisories/GHSA-p26j-h7wj-r568",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/butlerx/wetty/security/advisories/GHSA-p26j-h7wj-r568"
        }
      ],
      "source": {
        "advisory": "GHSA-p26j-h7wj-r568",
        "discovery": "UNKNOWN"
      },
      "title": "wetty vulnerable to DOM XSS via file-download filename"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-49864",
    "datePublished": "2026-08-13T19:10:41.037Z",
    "dateReserved": "2026-06-01T22:03:19.640Z",
    "dateUpdated": "2026-08-13T19:10:41.037Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}