{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-120633", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-11-02T17:40:07.895Z", "datePublished": "2026-11-03T23:40:04.604Z", "dateUpdated": "2026-11-03T23:40:04.604Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "modules": ["CGI"], "packageName": "CGI", "packageURL": "pkg:cpan/CGI", "programFiles": ["lib/CGI.pm"], "programRoutines": [{"name": "CGI::url"}, {"name": "CGI::self_url"}, {"name": "CGI::virtual_host"}, {"name": "CGI::virtual_port"}], "repo": "https://github.com/leejo/CGI.pm", "versions": [{"lessThan": "5.00", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port.\n\nThese take the host name and port from the X-Forwarded-Host request header when present, and otherwise from Host, without validating either. The URLs from url and self_url are the default redirect location and the start_html(-base=>1) base href, and the default start_form action when REQUEST_URI is not set.\n\nA client can poison shared caches, and URLs the application stores or sends, with redirects, links and scripts that point at a host it controls."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-348", "description": "CWE-348 Use of Less Trusted Source", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-601", "description": "CWE-601 URL Redirection to Untrusted Site ('Open Redirect')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-11-03T23:40:04.604Z"}, "references": [{"tags": ["technical-description"], "url": "https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/LEEJO/CGI-5.00/changes"}, {"tags": ["patch"], "url": "https://github.com/leejo/CGI.pm/commit/d76752a5e8dfd365b0fe3a0b9a7da6c054e856af.patch"}], "solutions": [{"lang": "en", "value": "Upgrade to CGI 5.00 or later."}], "source": {"discovery": "UNKNOWN"}, "title": "CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port", "workarounds": [{"lang": "en", "value": "For deployments that cannot upgrade, strip X-Forwarded-Host at the web server or proxy unless it sets the header itself, and validate Host."}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "modules": ["CGI"], "packageName": "CGI", "packageURL": "pkg:cpan/CGI", "programFiles": ["lib/CGI.pm"], "programRoutines": [{"name": "CGI::url"}, {"name": "CGI::self_url"}, {"name": "CGI::virtual_host"}, {"name": "CGI::virtual_port"}], "repo": "https://github.com/leejo/CGI.pm", "versions": [{"lessThan": "5.00", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port.\n\nThese take the host name and port from the X-Forwarded-Host request header when present, and otherwise from Host, without validating either. The URLs from url and self_url are the default redirect location and the start_html(-base=>1) base href, and the default start_form action when REQUEST_URI is not set.\n\nA client can poison shared caches, and URLs the application stores or sends, with redirects, links and scripts that point at a host it controls."}], "id": "CVE-2026-120633", "lastModified": "2026-11-04T18:42:35.810", "metrics": {}, "published": "2026-11-04T00:17:24.450", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://github.com/leejo/CGI.pm/commit/d76752a5e8dfd365b0fe3a0b9a7da6c054e856af.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/LEEJO/CGI-5.00/changes"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-348"}, {"lang": "en", "value": "CWE-601"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{"bugzilla": {"description": "perl-CGI: perl-CGI: Web cache poisoning and URL manipulation via untrusted host headers", "id": "2566594", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2566594"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-601", "details": ["A flaw was found in perl-CGI. This vulnerability allows a remote attacker to conduct web cache poisoning or redirect users to malicious websites by sending crafted Hypertext Transfer Protocol (HTTP) requests with untrusted host headers. Because the module trusts client-provided headers such as X-Forwarded-Host to construct internal addresses and redirects without proper validation, an attacker can manipulate generated links to point to an external system under their control."], "name": "CVE-2026-120633", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "perl-CGI", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "perl-CGI", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "perl-CGI", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "perl-CGI", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-11-03T23:40:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-120633\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-120633\nhttps://github.com/leejo/CGI.pm/commit/d76752a5e8dfd365b0fe3a0b9a7da6c054e856af.patch\nhttps://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm\nhttps://metacpan.org/release/LEEJO/CGI-5.00/changes"], "threat_severity": "Moderate"}

{"created": "2026-11-04T08:45:11.439788+00:00", "updated": "2026-11-04T13:45:14.760226+00:00", "vendors": []}