FKIE_CVE-2026-25645

Vulnerability from fkie_nvd - Published: 2026-03-25 17:16 - Updated: 2026-03-25 17:16
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
Summary
Requests is a HTTP library. Prior to version 2.33.0, the function `requests.utils.extract_zipped_paths()` (which is used by `HTTPAdapter.cert_verify()` to load the CA bundle, often from the `certifi` package's zipapp structure) uses a predictable, non-unique filename (the basename of the file, e.g., `cacert.pem`) when attempting to extract files into the system's temporary directory (`/tmp`). The vulnerable logic performs a check to see if the target file already exists in `/tmp` and re-uses the existing file if found, instead of securely checking the file's content or ensuring atomic, unique extraction. This allows a Local Attacker to pre-create a malicious CA bundle file (e.g., `/tmp/cacert.pem`) before a vulnerable application (running with potentially higher privileges) initializes the `requests` library. Version 2.33.0 contains a patch.
References
security-advisories@github.comhttps://github.com/psf/requests/commit/66d21cb07bd6255b1280291c4fafb71803cdb3b7
security-advisories@github.comhttps://github.com/psf/requests/releases/tag/v2.33.0
security-advisories@github.comhttps://github.com/psf/requests/security/advisories/GHSA-gc5v-m9x4-r6x2
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Requests is a HTTP library. Prior to version 2.33.0, the function `requests.utils.extract_zipped_paths()` (which is used by `HTTPAdapter.cert_verify()` to load the CA bundle, often from the `certifi` package\u0027s zipapp structure) uses a predictable, non-unique filename (the basename of the file, e.g., `cacert.pem`) when attempting to extract files into the system\u0027s temporary directory (`/tmp`). The vulnerable logic performs a check to see if the target file already exists in `/tmp` and re-uses the existing file if found, instead of securely checking the file\u0027s content or ensuring atomic, unique extraction. This allows a Local Attacker to pre-create a malicious CA bundle file (e.g., `/tmp/cacert.pem`) before a vulnerable application (running with potentially higher privileges) initializes the `requests` library. Version 2.33.0 contains a patch."
    }
  ],
  "id": "CVE-2026-25645",
  "lastModified": "2026-03-25T17:16:52.970",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-25T17:16:52.970",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psf/requests/commit/66d21cb07bd6255b1280291c4fafb71803cdb3b7"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psf/requests/releases/tag/v2.33.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psf/requests/security/advisories/GHSA-gc5v-m9x4-r6x2"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-377"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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