fkie_cve-2025-8848
Vulnerability from fkie_nvd
Published
2025-10-22 14:15
Modified
2025-10-30 17:34
Summary
A vulnerability in danny-avila/librechat version 0.7.9 allows for HTML injection via the Accept-Language header. When a logged-in user sends an HTTP GET request with a crafted Accept-Language header, arbitrary HTML can be injected into the <html lang=""> tag of the response. This can lead to potential security risks such as cross-site scripting (XSS) attacks.
Impacted products
Vendor Product Version
librechat librechat 0.7.9



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      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*",
              "matchCriteriaId": "74A99A2E-023B-4C39-9696-61DA01C9284E",
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          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in danny-avila/librechat version 0.7.9 allows for HTML injection via the Accept-Language header. When a logged-in user sends an HTTP GET request with a crafted Accept-Language header, arbitrary HTML can be injected into the \u003chtml lang=\"\"\u003e tag of the response. This can lead to potential security risks such as cross-site scripting (XSS) attacks."
    }
  ],
  "id": "CVE-2025-8848",
  "lastModified": "2025-10-30T17:34:52.680",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 2.7,
        "source": "security@huntr.dev",
        "type": "Secondary"
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    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
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        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-10-22T14:15:52.393",
  "references": [
    {
      "source": "security@huntr.dev",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "url": "https://huntr.com/bounties/a05ebc1f-882a-4adc-b178-d3cefa4b730e"
    }
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  "sourceIdentifier": "security@huntr.dev",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "security@huntr.dev",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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