Vulnerability-Lookup

PYSEC-2024-271

Vulnerability from pysec - Published: 2024-04-19 20:15 - Updated: 2026-05-21 14:54

Details

corydolphin/flask-cors is vulnerable to log injection when the log level is set to debug. An attacker can inject fake log entries into the log file by sending a specially crafted GET request containing a CRLF sequence in the request path. This vulnerability allows attackers to corrupt log files, potentially covering tracks of other attacks, confusing log post-processing tools, and forging log entries. The issue is due to improper output neutralization for logs.

Severity

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Impacted products

Name	purl
flask-cors	pkg:pypi/flask-cors

Aliases

CVE-2024-1681

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "flask-cors",
        "purl": "pkg:pypi/flask-cors"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.0.dev3",
        "0.0.0.dev4",
        "1.0",
        "1.1",
        "1.1.1",
        "1.1.2",
        "1.1.3",
        "1.10.0",
        "1.10.1",
        "1.10.2",
        "1.10.3",
        "1.2.0",
        "1.2.1",
        "1.3.0",
        "1.3.1",
        "1.4.0",
        "1.5.0",
        "1.6.0",
        "1.6.1",
        "1.7.0",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.7.4",
        "1.8.0",
        "1.8.1",
        "1.9.0",
        "2.0.0",
        "2.0.0rc1",
        "2.0.1",
        "2.1.0",
        "2.1.1",
        "2.1.2",
        "2.1.3",
        "3.0.0",
        "3.0.1",
        "3.0.10",
        "3.0.2",
        "3.0.3",
        "3.0.4",
        "3.0.6",
        "3.0.7",
        "3.0.8",
        "3.0.9",
        "4.0.0",
        "4.0.0a0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-1681"
  ],
  "details": "corydolphin/flask-cors is vulnerable to log injection when the log level is set to debug. An attacker can inject fake log entries into the log file by sending a specially crafted GET request containing a CRLF sequence in the request path. This vulnerability allows attackers to corrupt log files, potentially covering tracks of other attacks, confusing log post-processing tools, and forging log entries. The issue is due to improper output neutralization for logs.",
  "id": "PYSEC-2024-271",
  "modified": "2026-05-21T14:54:28.903948Z",
  "published": "2024-04-19T20:15:09.273Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html"
    },
    {
      "type": "EVIDENCE",
      "url": "https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-1681 (GCVE-0-2024-1681)

Vulnerability from cvelistv5 – Published: 2024-04-19 19:37 – Updated: 2025-11-03 19:29

Title

Log Injection Vulnerability in corydolphin/flask-cors

Summary

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-117 - Improper Output Neutralization for Logs

Assigner

@huntr_ai

References

1 reference

URL	Tags
https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb…

Impacted products

1 product

Vendor	Product	Version
corydolphin	corydolphin/flask-cors	Affected: unspecified , ≤ latest (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:corydolphin:flask-cors:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "flask-cors",
            "vendor": "corydolphin",
            "versions": [
              {
                "status": "affected",
                "version": "-"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-1681",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-22T20:21:15.891893Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T18:00:45.486Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:29:18.706Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "corydolphin/flask-cors",
          "vendor": "corydolphin",
          "versions": [
            {
              "lessThanOrEqual": "latest",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "corydolphin/flask-cors is vulnerable to log injection when the log level is set to debug. An attacker can inject fake log entries into the log file by sending a specially crafted GET request containing a CRLF sequence in the request path. This vulnerability allows attackers to corrupt log files, potentially covering tracks of other attacks, confusing log post-processing tools, and forging log entries. The issue is due to improper output neutralization for logs."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-117",
              "description": "CWE-117 Improper Output Neutralization for Logs",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-04-19T19:37:27.998Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntr_ai"
      },
      "references": [
        {
          "url": "https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644"
        }
      ],
      "source": {
        "advisory": "25a7a0ba-9fa2-4777-acb6-03e5539bb644",
        "discovery": "EXTERNAL"
      },
      "title": "Log Injection Vulnerability in corydolphin/flask-cors"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntr_ai",
    "cveId": "CVE-2024-1681",
    "datePublished": "2024-04-19T19:37:27.998Z",
    "dateReserved": "2024-02-20T19:13:22.208Z",
    "dateUpdated": "2025-11-03T19:29:18.706Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

PYSEC-2024-271

CVE-2024-1681 (GCVE-0-2024-1681)

Tags

Sightings

Nomenclature