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CVE-2023-2534

Estado: ModificadaAlta (8.1)—

Improper Authorization vulnerability in OTRS AG OTRS 8 (Websocket API backend) allows any as Agent authenticated attacker to track user behaviour and to gain live insight into overall system usage. User IDs can easily be correlated with real names e. g. via ticket histories by any user. (Fuzzing for garnering other adjacent user/sensitive data). Subscribing to all possible push events could also lead to performance implications on the server side, depending on the size of the installation and the number of active users. (Flooding)This issue affects OTRS: from 8.0.X before 8.0.32.

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 (1)

Otrs — Otrs

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-2534",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-2534",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-01-29T15:54:24.138248Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 7.6,
          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.8
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "integrityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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  },
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      "affectedData": [
        {
          "vendor": "OTRS AG",
          "modules": [
            "Websocket API"
          ],
          "product": "OTRS",
          "versions": [
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              "version": "8.0.x",
              "lessThan": "8.0.32",
              "versionType": "Patch"
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  "published": "2023-05-08T08:15:43.673",
  "references": [
    {
      "url": "https://otrs.com/release-notes/otrs-security-advisory-2023-03/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@otrs.com"
    },
    {
      "url": "https://otrs.com/release-notes/otrs-security-advisory-2023-03/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@otrs.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Authorization vulnerability in OTRS AG OTRS 8 (Websocket API backend) allows any as Agent authenticated attacker to track user behaviour and to gain live insight into overall system usage. User IDs can easily be correlated with real names e. g. via\nticket histories by any user. (Fuzzing for garnering other adjacent user/sensitive data). Subscribing to all possible push events could also lead to performance implications on the server side, depending on the size of the installation\nand the number of active users. (Flooding)This issue affects OTRS: from 8.0.X before 8.0.32.\n\n"
    }
  ],
  "lastModified": "2026-06-17T05:52:48.170",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "8.0.32",
              "versionStartIncluding": "8.0.0"
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "security@otrs.com"
}