FKIE_CVE-2026-0266

Vulnerability from fkie_nvd - Published: 2026-06-10 22:16 - Updated: 2026-07-14 13:18
Severity
4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Summary
A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not affected by this vulnerability.
References
psirt@paloaltonetworks.comhttps://security.paloaltonetworks.com/CVE-2026-0266Vendor Advisory
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-104023.html
Impacted products
Vendor Product Version
paloaltonetworks pan-os *
paloaltonetworks pan-os *
paloaltonetworks pan-os *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Cloud NGFW",
          "vendor": "Palo Alto Networks",
          "versions": [
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              "version": "All",
              "versionType": "custom"
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        },
        {
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            "cpe:2.3:o:palo_alto_networks:pan-os:11.1.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:palo_alto_networks:pan-os:11.1.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:palo_alto_networks:pan-os:11.1.0:*:*:*:*:*:*:*",
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            "cpe:2.3:o:palo_alto_networks:pan-os:10.2.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:palo_alto_networks:pan-os:10.2.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:palo_alto_networks:pan-os:10.2.0:*:*:*:*:*:*:*"
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          "vendor": "Palo Alto Networks",
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                  "status": "unaffected"
                }
              ],
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              "status": "affected",
              "version": "12.1.0",
              "versionType": "custom"
            },
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                  "status": "unaffected"
                }
              ],
              "lessThan": "11.2.11",
              "status": "affected",
              "version": "11.2.0",
              "versionType": "custom"
            },
            {
              "changes": [
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                  "at": "11.1.14",
                  "status": "unaffected"
                }
              ],
              "lessThan": "11.1.14",
              "status": "affected",
              "version": "11.1.0",
              "versionType": "custom"
            },
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              "status": "affected",
              "version": "10.2.0",
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            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Prisma Access",
          "vendor": "Palo Alto Networks",
          "versions": [
            {
              "status": "unaffected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@paloaltonetworks.com"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "RUGGEDCOM APE1808",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D1A3CA93-4D0A-4DF0-AF35-BEE8280703A6",
              "versionEndExcluding": "11.1.14",
              "versionStartIncluding": "10.2.0",
              "vulnerable": true
            },
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS\u00ae software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. \n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma\u00ae Access are not affected by this vulnerability."
    }
  ],
  "id": "CVE-2026-0266",
  "lastModified": "2026-07-14T13:18:10.833",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NO",
          "Recovery": "USER",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.1,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "UNREPORTED",
          "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": "HIGH",
          "providerUrgency": "AMBER",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "DIFFUSE",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/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:U/V:D/RE:M/U:Amber",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "MODERATE"
        },
        "source": "psirt@paloaltonetworks.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-0266",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-11T14:34:49.983330Z",
          "version": "2.0.3"
        }
      }
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  },
  "published": "2026-06-10T22:16:52.787",
  "references": [
    {
      "source": "psirt@paloaltonetworks.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.paloaltonetworks.com/CVE-2026-0266"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-104023.html"
    }
  ],
  "sourceIdentifier": "psirt@paloaltonetworks.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "psirt@paloaltonetworks.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.