FKIE_CVE-2026-63228

Vulnerability from fkie_nvd - Published: 2026-07-29 07:16 - Updated: 2026-07-30 16:54
Severity
2.6 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Summary
An unrestricted image upload vulnerability in Koollab LMS allowed an authenticated attacker to upload malicious content disguised as an image file via the feedback mail registration endpoint, potentially enabling further attacks on the server.
References
5f57b9bf-260d-4433-bf07-b6a79e9bb7d4https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Koollab LMS",
          "vendor": "Three Learning",
          "versions": [
            {
              "status": "affected",
              "version": "5.3.2"
            }
          ]
        }
      ],
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unrestricted image upload vulnerability in\nKoollab LMS allowed\nan authenticated attacker to upload malicious content disguised as an image\nfile via the feedback mail registration endpoint, potentially enabling further\nattacks on the server."
    }
  ],
  "id": "CVE-2026-63228",
  "lastModified": "2026-07-30T16:54:05.457",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 1.4,
        "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63228",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-29T15:10:48.530337Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-29T07:16:42.160",
  "references": [
    {
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
      "url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/"
    }
  ],
  "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "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.