FKIE_CVE-2026-48945

Vulnerability from fkie_nvd - Published: 2026-06-25 16:16 - Updated: 2026-06-28 19:16
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/<id>/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.
References
security@joomla.orghttps://www.getk2.org/Product
Impacted products
Vendor Product Version
joomlaworks k2 *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "K2 extension for Joomla",
          "vendor": "getk2.org",
          "versions": [
            {
              "status": "affected",
              "version": "1.0-2.26"
            }
          ]
        }
      ],
      "source": "security@joomla.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:joomlaworks:k2:*:*:*:*:*:joomla\\!:*:*",
              "matchCriteriaId": "75F0068E-23F6-4BDC-97E2-AAD0D06F5D72",
              "versionEndIncluding": "2.26",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/\u003cid\u003e/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names \u2014 non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access."
    }
  ],
  "id": "CVE-2026-48945",
  "lastModified": "2026-06-28T19:16:51.837",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48945",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-25T18:45:48.959013Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-25T16:16:37.060",
  "references": [
    {
      "source": "security@joomla.org",
      "tags": [
        "Product"
      ],
      "url": "https://www.getk2.org/"
    }
  ],
  "sourceIdentifier": "security@joomla.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "security@joomla.org",
      "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.

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