FKIE_CVE-2026-23522

Vulnerability from fkie_nvd - Published: 2026-01-19 17:15 - Updated: 2026-04-15 00:35
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
LobeChat is an open source chat application platform. Prior to version 2.0.0-next.193, `knowledgeBase.removeFilesFromKnowledgeBase` tRPC ep allows authenticated users to delete files from any knowledge base without verifying ownership. `userId` filter in the database query is commented out, so it's enabling attackers to delete other users' KB files if they know the knowledge base ID and file ID. While the vulnerability is confirmed, practical exploitation requires knowing target's KB ID and target's file ID. These IDs are random and not easily enumerable. However, IDs may leak through shared links, logs, referrer headers and so on. Missing authorization check is a critical security flaw regardless. Users should upgrade to version 2.0.0-next.193 to receive a patch.
References
security-advisories@github.comhttps://github.com/lobehub/lobe-chat/commit/2c1762b85acb84467ed5e799afe1499cd2f912e6
security-advisories@github.comhttps://github.com/lobehub/lobe-chat/security/advisories/GHSA-j7xp-4mg9-x28r
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "LobeChat is an open source chat application platform. Prior to version 2.0.0-next.193, `knowledgeBase.removeFilesFromKnowledgeBase` tRPC ep allows authenticated users to delete files from any knowledge base without verifying ownership. `userId` filter in the database query is commented out, so it\u0027s enabling attackers to delete other users\u0027 KB files if they know the knowledge base ID and file ID. While the vulnerability is confirmed, practical exploitation requires knowing target\u0027s KB ID and target\u0027s file ID. These IDs are random and not easily enumerable. However, IDs may leak through shared links, logs, referrer headers and so on. Missing authorization check is a critical security flaw regardless. Users should upgrade to version 2.0.0-next.193 to receive a patch."
    },
    {
      "lang": "es",
      "value": "LobeChat es una plataforma de aplicaci\u00f3n de chat de c\u00f3digo abierto. Antes de la versi\u00f3n 2.0.0-next.193, el endpoint tRPC \u0027knowledgeBase.removeFilesFromKnowledgeBase\u0027 permite a los usuarios autenticados eliminar archivos de cualquier base de conocimiento sin verificar la propiedad. El filtro \u0027userId\u0027 en la consulta de la base de datos est\u00e1 comentado, lo que permite a los atacantes eliminar archivos de KB de otros usuarios si conocen el ID de la base de conocimiento y el ID del archivo. Aunque la vulnerabilidad est\u00e1 confirmada, la explotaci\u00f3n pr\u00e1ctica requiere conocer el ID de KB del objetivo y el ID del archivo del objetivo. Estos ID son aleatorios y no son f\u00e1cilmente enumerables. Sin embargo, los ID pueden filtrarse a trav\u00e9s de enlaces compartidos, registros, encabezados de referencia y dem\u00e1s. La falta de verificaci\u00f3n de autorizaci\u00f3n es una falla de seguridad cr\u00edtica de todos modos. Los usuarios deben actualizar a la versi\u00f3n 2.0.0-next.193 para recibir un parche."
    }
  ],
  "id": "CVE-2026-23522",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-19T17:15:50.590",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/lobehub/lobe-chat/commit/2c1762b85acb84467ed5e799afe1499cd2f912e6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/lobehub/lobe-chat/security/advisories/GHSA-j7xp-4mg9-x28r"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        },
        {
          "lang": "en",
          "value": "CWE-639"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        },
        {
          "lang": "en",
          "value": "CWE-915"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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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.