github - ghsa-wh29-fq99-4ww5

ghsa-wh29-fq99-4ww5

Vulnerability from github

Published

2025-08-29 03:30

Modified

2025-08-29 15:30

Severity ?

7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Details

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-40927"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-113"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-29T01:15:34Z",
    "severity": "HIGH"
  },
  "details": "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",
  "id": "GHSA-wh29-fq99-4ww5",
  "modified": "2025-08-29T15:30:38Z",
  "published": "2025-08-29T03:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40927"
    },
    {
      "type": "WEB",
      "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320"
    },
    {
      "type": "WEB",
      "url": "https://datatracker.ietf.org/doc/html/rfc7230#section-3"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/diff/MANWAR/CGI-Simple-1.282/lib/CGI/Simple.pm"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/MANWAR/CGI-Simple-1.281/source/lib/CGI/Simple.pm#L1031-1035"
    },
    {
      "type": "WEB",
      "url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting"
    },
    {
      "type": "WEB",
      "url": "https://rt.perl.org/Public/Bug/Display.html?id=21951"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-40927 (GCVE-0-2025-40927)

Vulnerability from cvelistv5

Published

2025-08-29 00:10

Modified

2025-08-29 13:18

Severity ?

7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

Summary

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

References

▼	URL	Tags
	https://metacpan.org/release/MANWAR/CGI-Simple-1.281/source/lib/CGI/Simple.pm#L1031-1035	related
	https://metacpan.org/release/MANWAR/CGI-Simple-1.281/diff/MANWAR/CGI-Simple-1.282/lib/CGI/Simple.pm	related
	https://owasp.org/www-community/attacks/HTTP_Response_Splitting	technical-description
	https://datatracker.ietf.org/doc/html/rfc7230#section-3	technical-description
	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320	related
	https://rt.perl.org/Public/Bug/Display.html?id=21951	related

Impacted products

	Vendor	Product	Version
	MANWAR	CGI::Simple	Version: 0 < 1.282

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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