ubuntu-cve-2025-40927
Vulnerability from osv_ubuntu
Published
2025-08-29 01:15
Modified
2026-05-20 15:22
Summary
Details
CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw This vulnerability is a confirmed HTTP response splitting flaw in CGI::Simple that allows HTTP response header injection, which can be used for reflected XSS or open redirect under certain conditions. Although some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters. As 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. The issue documented in CVE-2010-4410 https://www.cve.org/CVERecord?id=CVE-2010-4410 is related but the fix was incomplete. Impact By injecting %0A (newline) into a query string parameter, an attacker can: * Break the current HTTP header * Inject a new header or entire body * Deliver a script payload that is reflected in the server’s response That can lead to the following attacks: * reflected XSS * open redirect * cache poisoning * header manipulation
Severity
7.3 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.115-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.115-2?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.115-1",
"1.115-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.115-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.115-2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.115-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.115-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.115-2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.115-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.280-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.280-1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.115-2",
"1.280-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.281-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.281-1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.280-2",
"1.281-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.281-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.281-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.281-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcgi-simple-perl",
"binary_version": "1.282-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "libcgi-simple-perl",
"purl": "pkg:deb/ubuntu/libcgi-simple-perl@1.282-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.281-1",
"1.282-1"
]
}
],
"aliases": [],
"details": "CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw This 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. Although some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters. As 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. The issue documented in CVE-2010-4410 https://www.cve.org/CVERecord?id=CVE-2010-4410 is related but the fix was incomplete. Impact By injecting %0A\u00a0(newline) into a query string parameter, an attacker can: * Break the current HTTP header * Inject a new header or entire body * Deliver a script payload that is reflected in the server\u2019s response That can lead to the following attacks: * reflected XSS * open redirect * cache poisoning * header manipulation",
"id": "UBUNTU-CVE-2025-40927",
"modified": "2026-05-20T15:22:51Z",
"published": "2025-08-29T01:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-40927"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40927"
},
{
"type": "REPORT",
"url": "https://lists.security.metacpan.org/cve-announce/msg/32357435/"
},
{
"type": "REPORT",
"url": "https://github.com/manwar/CGI--Simple/commit/0c1a2e0b8f24804d33daac686666ac944363a630"
},
{
"type": "REPORT",
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320"
},
{
"type": "REPORT",
"url": "https://datatracker.ietf.org/doc/html/rfc7230#section-3"
},
{
"type": "REPORT",
"url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/diff/MANWAR/CGI-Simple-1.282/lib/CGI/Simple.pm"
},
{
"type": "REPORT",
"url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/source/lib/CGI/Simple.pm#L1031-1035"
},
{
"type": "REPORT",
"url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting"
},
{
"type": "REPORT",
"url": "https://rt.perl.org/Public/Bug/Display.html?id=21951"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-40927"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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