CVE-2026-12888

{
  "id": "CVE-2026-12888",
  "sourceIdentifier": "0f2be0ad-3469-4e56-b38f-4eb96719b425",
  "published": "2026-06-22T14:16:34.740",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An HTML injection vulnerability exists in the Google Chat webhook notification  sent by Thinkst Applied Research Canarytokens, enabling Interface Manipulation in Google Chat. An attacker can insert limited HTML content including links.\n\n\nThis issue affects Canarytokens: from Docker tag sha-4aef1db90 before sha-8ab4dccd, from Git commit 4aef1db90 before 8ab4dccd."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de inyección HTML existe en la notificación de webhook de Google Chat enviada por Thinkst Applied Research Canarytokens, lo que permite la manipulación de la interfaz en Google Chat. Un atacante puede insertar contenido HTML limitado, incluyendo enlaces.\n\nEste problema afecta a Canarytokens: desde la etiqueta de Docker sha-4aef1db90 anterior a sha-8ab4dccd, desde el commit de Git 4aef1db90 anterior a 8ab4dccd."
    }
  ],
  "affected": [
    {
      "source": "0f2be0ad-3469-4e56-b38f-4eb96719b425",
      "affectedData": [
        {
          "vendor": "Thinkst Applied Research",
          "product": "Canarytokens",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "sha-4aef1db90",
              "lessThan": "sha-8ab4dccd",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "4aef1db90",
              "lessThan": "8ab4dccd",
              "versionType": "git",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "0f2be0ad-3469-4e56-b38f-4eb96719b425",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:P/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:N/R:X/V:X/RE:L/U:Green",
          "baseScore": 2.0,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "ACTIVE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "LOW",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NO",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "LOW",
          "providerUrgency": "GREEN"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-22T15:42:24.249954Z",
          "id": "CVE-2026-12888",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "0f2be0ad-3469-4e56-b38f-4eb96719b425",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/thinkst/canarytokens/security/advisories/GHSA-vcfc-7466-8q65",
      "source": "0f2be0ad-3469-4e56-b38f-4eb96719b425"
    }
  ]
}