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CVE-2025-25194

Estado: AplazadaMedia (4)—

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypub_federation and versions 0.19.8 and prior of Lemmy, allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request. As of time of publication, a fix has not been made available.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Activitypub Federation — Activitypub FederationAIJoin-lemmy — LemmyAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-25194",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-25194",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-11T15:19:28.876838Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "LemmyNet",
          "product": "lemmy",
          "versions": [
            {
              "status": "affected",
              "version": "<= 0.19.8"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-02-10T23:15:16.067",
  "references": [
    {
      "url": "https://github.com/LemmyNet/lemmy/security/advisories/GHSA-7723-35v7-qcxw",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. This vulnerability, which is present in versions 0.6.2 and prior of activitypub_federation and versions 0.19.8 and prior of Lemmy, allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request. As of time of publication, a fix has not been made available."
    },
    {
      "lang": "es",
      "value": "Lemmy, un agregador de enlaces y foro para el fediverso, es vulnerable a server-side request forgery a través de una dependencia de activitypub_federation, un framework para la federación de ActivityPub en Rust. Esta vulnerabilidad, que está presente en las versiones 0.6.2 y anteriores de activitypub_federation y en las versiones 0.19.8 y anteriores de Lemmy, permite a un usuario eludir cualquier ruta URL predefinida codificada o mecanismo anti-Localhost de seguridad y realizar una solicitud GET arbitraria a cualquier host, puerto y URL mediante una solicitud Webfinger. Al momento de la publicación, no se había puesto a disposición una solución."
    }
  ],
  "lastModified": "2026-06-17T09:00:27.687",
  "sourceIdentifier": "security-advisories@github.com"
}