FKIE_CVE-2020-26137

Vulnerability from fkie_nvd - Published: 2020-09-30 18:15 - Updated: 2026-06-17 03:07
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
References
cve@mitre.orghttps://bugs.python.org/issue39603Issue Tracking, Vendor Advisory
cve@mitre.orghttps://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436bPatch, Third Party Advisory
cve@mitre.orghttps://github.com/urllib3/urllib3/pull/1800Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/06/msg00015.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
cve@mitre.orghttps://usn.ubuntu.com/4570-1/Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.python.org/issue39603Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436bPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/urllib3/urllib3/pull/1800Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/06/msg00015.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4570-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
Impacted products
Vendor Product Version
python urllib3 *
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
debian debian_linux 9.0
oracle communications_cloud_native_core_network_function_cloud_native_environment 22.2.0
oracle zfs_storage_appliance_kit 8.8
To clipboard 

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  "cveTags": [],
  "descriptions": [
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    },
    {
      "lang": "es",
      "value": "urllib3 versiones anteriores a 1.25.9, permite una inyecci\u00f3n de CRLF si el atacante controla el m\u00e9todo de petici\u00f3n HTTP, como es demostrado al insertar caracteres de control CR y LF en el primer argumento de la funci\u00f3n putrequest().\u0026#xa0;NOTA: esto es similar a CVE-2020-26116"
    }
  ],
  "id": "CVE-2020-26137",
  "lastModified": "2026-06-17T03:07:39.533",
  "metrics": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
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          "confidentialityImpact": "PARTIAL",
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}



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