FKIE_CVE-2026-53841

Vulnerability from fkie_nvd - Published: 2026-06-16 19:17 - Updated: 2026-06-17 21:03
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
OpenClaw before 2026.5.12 contains a cross-site scripting vulnerability in exported session HTML that preserves unsafe javascript: and data: links in generated content. Attackers can execute browser-side scripts if a trusted operator opens the exported file and activates a malicious link.
References
disclosure@vulncheck.comhttps://github.com/openclaw/openclaw/security/advisories/GHSA-w9hf-3pp7-pvxvVendor Advisory
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/openclaw-cross-site-scripting-via-unsafe-markdown-links-in-exported-session-htmlThird Party Advisory
Impacted products
Vendor Product Version
openclaw openclaw *
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
openclaw openclaw 2026.5.12
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/openclaw",
          "product": "OpenClaw",
          "repo": "https://github.com/openclaw/openclaw",
          "vendor": "OpenClaw",
          "versions": [
            {
              "lessThan": "2026.5.12",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "2026.5.12",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "DE7E74F5-925B-4DC3-AFAF-9C0CAD4AADE9",
              "versionEndExcluding": "2026.5.12",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta1:*:*:*:node.js:*:*",
              "matchCriteriaId": "B2F3E79D-C148-461C-9C28-9CAC44DA9C79",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta2:*:*:*:node.js:*:*",
              "matchCriteriaId": "707AED9D-DA43-49D7-B7F4-59A191E84F7F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta3:*:*:*:node.js:*:*",
              "matchCriteriaId": "0A703002-3775-4DD0-AA4A-14A80C966009",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta4:*:*:*:node.js:*:*",
              "matchCriteriaId": "A4100ECD-456B-46C7-89A5-ECB2AF5ACAE4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta5:*:*:*:node.js:*:*",
              "matchCriteriaId": "49121842-6A84-4C19-8465-A93C67B2FB32",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta6:*:*:*:node.js:*:*",
              "matchCriteriaId": "18698933-5F61-484F-88EB-D14A0C684FF0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta7:*:*:*:node.js:*:*",
              "matchCriteriaId": "471D48FA-A3F4-4DC0-A46D-16FBAAB9A3BD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openclaw:openclaw:2026.5.12:beta8:*:*:*:node.js:*:*",
              "matchCriteriaId": "2543F40A-7360-496F-9F12-38D9B9B9291A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenClaw before 2026.5.12 contains a cross-site scripting vulnerability in exported session HTML that preserves unsafe javascript: and data: links in generated content. Attackers can execute browser-side scripts if a trusted operator opens the exported file and activates a malicious link."
    }
  ],
  "id": "CVE-2026-53841",
  "lastModified": "2026-06-17T21:03:43.250",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "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",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.1,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53841",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-17T14:48:23.605311Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-16T19:17:00.993",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-w9hf-3pp7-pvxv"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/openclaw-cross-site-scripting-via-unsafe-markdown-links-in-exported-session-html"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-83"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.