CVE-2023-49082 (GCVE-0-2023-49082)

Vulnerability from cvelistv5 – Published: 2023-11-29 20:07 – Updated: 2025-11-04 18:19
VLAI?
Title
aiohttp's ClientSession is vulnerable to CRLF injection via method
Summary
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
aio-libs aiohttp Affected: < 3.9.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T18:19:35.587Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx"
          },
          {
            "name": "https://github.com/aio-libs/aiohttp/pull/7806/files",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/aio-libs/aiohttp/pull/7806/files"
          },
          {
            "name": "https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466"
          },
          {
            "name": "https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSYWMP64ZFCTC3VO6RY6EC6VSSMV6I3A/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "aiohttp",
          "vendor": "aio-libs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.9.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-93",
              "description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-29T14:11:02.945Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/pull/7806/files",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/pull/7806/files"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466"
        },
        {
          "name": "https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b"
        }
      ],
      "source": {
        "advisory": "GHSA-qvrw-v9rv-5rjx",
        "discovery": "UNKNOWN"
      },
      "title": "aiohttp\u0027s ClientSession is vulnerable to CRLF injection via method"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-49082",
    "datePublished": "2023-11-29T20:07:29.341Z",
    "dateReserved": "2023-11-21T18:57:30.428Z",
    "dateUpdated": "2025-11-04T18:19:35.587Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-49082",
      "date": "2026-05-21",
      "epss": "0.00221",
      "percentile": "0.44632"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"3.9.0\", \"matchCriteriaId\": \"B601D31B-56AB-4C39-8CC0-12CFA373E53A\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.\"}, {\"lang\": \"es\", \"value\": \"aiohttp es un framework cliente/servidor HTTP as\\u00edncrono para asyncio y Python. Una validaci\\u00f3n inadecuada hace posible que un atacante modifique la solicitud HTTP (por ejemplo, inserte un nuevo encabezado) o incluso cree una nueva solicitud HTTP si el atacante controla el m\\u00e9todo HTTP. La vulnerabilidad ocurre s\\u00f3lo si el atacante puede controlar el m\\u00e9todo HTTP (GET, POST, etc.) de la solicitud. Si el atacante puede controlar la versi\\u00f3n HTTP de la solicitud, podr\\u00e1 modificar la solicitud (contrabando de solicitudes). Este problema se solucion\\u00f3 en la versi\\u00f3n 3.9.0.\"}]",
      "id": "CVE-2023-49082",
      "lastModified": "2024-11-21T08:32:47.033",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}]}",
      "published": "2023-11-29T20:15:08.180",
      "references": "[{\"url\": \"https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/pull/7806/files\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Exploit\", \"Vendor Advisory\"]}, {\"url\": \"https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/pull/7806/files\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Vendor Advisory\"]}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-20\"}, {\"lang\": \"en\", \"value\": \"CWE-93\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-49082\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2023-11-29T20:15:08.180\",\"lastModified\":\"2025-11-04T19:16:08.680\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.\"},{\"lang\":\"es\",\"value\":\"aiohttp es un framework cliente/servidor HTTP as\u00edncrono para asyncio y Python. Una validaci\u00f3n inadecuada hace posible que un atacante modifique la solicitud HTTP (por ejemplo, inserte un nuevo encabezado) o incluso cree una nueva solicitud HTTP si el atacante controla el m\u00e9todo HTTP. La vulnerabilidad ocurre s\u00f3lo si el atacante puede controlar el m\u00e9todo HTTP (GET, POST, etc.) de la solicitud. Si el atacante puede controlar la versi\u00f3n HTTP de la solicitud, podr\u00e1 modificar la solicitud (contrabando de solicitudes). Este problema se solucion\u00f3 en la versi\u00f3n 3.9.0.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"},{\"lang\":\"en\",\"value\":\"CWE-93\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.9.0\",\"matchCriteriaId\":\"B601D31B-56AB-4C39-8CC0-12CFA373E53A\"}]}]}],\"references\":[{\"url\":\"https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/aio-libs/aiohttp/pull/7806/files\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]},{\"url\":\"https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://github.com/aio-libs/aiohttp/pull/7806/files\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSYWMP64ZFCTC3VO6RY6EC6VSSMV6I3A/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.