{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 7.3,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-40927",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-29T13:18:01.758812Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-29T13:18:32.704Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "CGI-Simple",
          "product": "CGI::Simple",
          "programFiles": [
            "lib/CGI/Simple.pm"
          ],
          "repo": "https://github.com/manwar/CGI--Simple",
          "vendor": "MANWAR",
          "versions": [
            {
              "lessThan": "1.282",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Maxim Kosenko"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw\u003cbr\u003e\u003cp\u003eThis vulnerability is a \u003cstrong\u003econfirmed HTTP response splitting\u003c/strong\u003e\u0026nbsp;flaw in \u003ccode\u003eCGI::Simple\u003c/code\u003e\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003ethat allows HTTP response header injection, which can be used for reflected XSS or open redirect under certain conditions\u003c/span\u003e.\u003c/p\u003e\u003cp\u003eAlthough some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eAs a result, an attacker can inject a line break (e.g. \u003ccode\u003e%0A\u003c/code\u003e) into the parameter value, causing the server to split the HTTP response and inject arbitrary headers or even an HTML/JavaScript body, leading to reflected cross-site scripting (XSS), open redirect or other attacks.\u003c/p\u003e\u003cp\u003eThe issue documented in\u0026nbsp;\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://www.cve.org/CVERecord?id=CVE-2010-4410\"\u003eCVE-2010-4410\u003c/a\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;is related but the fix was incomplete.\u003c/span\u003e\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eImpact\u003c/strong\u003e\u003c/p\u003e\u003cp\u003eBy injecting \u003ccode\u003e%0A\u003c/code\u003e\u0026nbsp;(newline) into a query string parameter, an attacker can:\u003c/p\u003e\u003col\u003e\u003cli\u003eBreak the current HTTP header\u003c/li\u003e\u003cli\u003eInject a new header or entire body\u003c/li\u003e\u003cli\u003eDeliver a script payload that is reflected in the server\u2019s response\u003c/li\u003e\u003c/ol\u003e\u003cp\u003eThat can lead to the following attacks:\u003c/p\u003e\u003cul\u003e\u003cli\u003ereflected XSS\u003c/li\u003e\u003cli\u003eopen redirect\u003c/li\u003e\u003cli\u003ecache poisoning\u003c/li\u003e\u003cli\u003eheader manipulation\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003e"
            }
          ],
          "value": "CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw\nThis vulnerability is a confirmed HTTP response splitting\u00a0flaw in CGI::Simple\u00a0that allows HTTP response header injection, which can be used for reflected XSS or open redirect under certain conditions.\n\nAlthough some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters.\n\n\n\nAs a result, an attacker can inject a line break (e.g. %0A) into the parameter value, causing the server to split the HTTP response and inject arbitrary headers or even an HTML/JavaScript body, leading to reflected cross-site scripting (XSS), open redirect or other attacks.\n\nThe issue documented in CVE-2010-4410 https://www.cve.org/CVERecord?id=CVE-2010-4410 is related but the fix was incomplete.\n\nImpact\n\nBy injecting %0A\u00a0(newline) into a query string parameter, an attacker can:\n\n  *  Break the current HTTP header\n  *  Inject a new header or entire body\n  *  Deliver a script payload that is reflected in the server\u2019s response\nThat can lead to the following attacks:\n\n  *  reflected XSS\n  *  open redirect\n  *  cache poisoning\n  *  header manipulation"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-34",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-34 HTTP Response Splitting"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-113",
              "description": "CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers (\u0027HTTP Request/Response Splitting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-29T00:10:07.161Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "related"
          ],
          "url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/source/lib/CGI/Simple.pm#L1031-1035"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/diff/MANWAR/CGI-Simple-1.282/lib/CGI/Simple.pm"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://datatracker.ietf.org/doc/html/rfc7230#section-3"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://rt.perl.org/Public/Bug/Display.html?id=21951"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Upgrade CGI::Simple to version 1.282 or higher"
            }
          ],
          "value": "Upgrade CGI::Simple to version 1.282 or higher"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "CGI::Simple versions 1.281 and earlier for Perl has a HTTP response splitting flaw",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2025-40927",
    "datePublished": "2025-08-29T00:10:07.161Z",
    "dateReserved": "2025-04-16T09:05:34.362Z",
    "dateUpdated": "2025-08-29T13:18:32.704Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}