Vulnerability-Lookup

CVE-2026-19872 (GCVE-0-2026-19872)

Vulnerability from cvelistv5 – Published: 2026-09-08 20:08 – Updated: 2026-09-10 17:51

Title

HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message

Summary

HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message. The wrappers and renderers that emit a form's errors interpolate the error string straight into HTML with no escaping. Two of the library's own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error. A field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application's own escaping template layer rather than the library's rendering roles are not affected. A request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim's origin. Re-rendering a rejected value later gives the stored variant.

Severity

6.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 17:51 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

CPANSec redhat root

References

3 references

URL	Tags
https://github.com/gshank/html-formhandler/commit…	patch
https://metacpan.org/release/ABRAXXA/HTML-FormHan…	release-notes
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version	CPE status
		Affected: 0 , < 0.410000 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-09-08T22:07:16.768Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/09/08/15"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.1,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-19872",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T17:51:07.811981Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-10T17:51:23.851Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "HTML::FormHandler"
          ],
          "packageName": "HTML-FormHandler",
          "packageURL": "pkg:cpan/HTML-FormHandler",
          "programFiles": [
            "lib/HTML/FormHandler/Validate.pm",
            "lib/HTML/FormHandler/Render/Simple.pm",
            "lib/HTML/FormHandler/Render/Table.pm",
            "lib/HTML/FormHandler/Widget/Form/Simple.pm",
            "lib/HTML/FormHandler/Widget/Theme/BootstrapFormMessages.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Fieldset.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Simple.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/SimpleInline.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Table.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/TableInline.pm"
          ],
          "programRoutines": [
            {
              "name": "HTML::FormHandler::Validate::_apply_actions"
            },
            {
              "name": "HTML::FormHandler::Render::Simple::render_form_errors"
            },
            {
              "name": "HTML::FormHandler::Render::Simple::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Render::Table::render_form_errors"
            },
            {
              "name": "HTML::FormHandler::Render::Table::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Form::Simple::render_form_messages"
            },
            {
              "name": "HTML::FormHandler::Widget::Theme::BootstrapFormMessages::render_form_messages"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Fieldset::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Simple::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::SimpleInline::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Table::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::TableInline::wrap_field"
            }
          ],
          "repo": "https://github.com/gshank/html-formhandler",
          "versions": [
            {
              "lessThan": "0.410000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.\n\nThe wrappers and renderers that emit a form\u0027s errors interpolate the error string straight into HTML with no escaping. Two of the library\u0027s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.\n\nA field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application\u0027s own escaping template layer rather than the library\u0027s rendering roles are not affected.\n\nA request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim\u0027s origin. Re-rendering a rejected value later gives the stored variant."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-08T20:08:21.896Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to HTML-FormHandler 0.410000 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-19872",
    "datePublished": "2026-09-08T20:08:21.896Z",
    "dateReserved": "2026-08-14T12:49:19.665Z",
    "dateUpdated": "2026-09-10T17:51:23.851Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-19872",
      "date": "2026-09-10",
      "epss": "0.00226",
      "percentile": "0.13212"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-19872\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-09-08T20:17:29.850\",\"lastModified\":\"2026-09-10T18:17:58.827\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.\\n\\nThe wrappers and renderers that emit a form\u0027s errors interpolate the error string straight into HTML with no escaping. Two of the library\u0027s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.\\n\\nA field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application\u0027s own escaping template layer rather than the library\u0027s rendering roles are not affected.\\n\\nA request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim\u0027s origin. Re-rendering a rejected value later gives the stored variant.\"}],\"affected\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"affectedData\":[{\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://cpan.org/modules\",\"packageName\":\"HTML-FormHandler\",\"modules\":[\"HTML::FormHandler\"],\"programFiles\":[\"lib/HTML/FormHandler/Validate.pm\",\"lib/HTML/FormHandler/Render/Simple.pm\",\"lib/HTML/FormHandler/Render/Table.pm\",\"lib/HTML/FormHandler/Widget/Form/Simple.pm\",\"lib/HTML/FormHandler/Widget/Theme/BootstrapFormMessages.pm\",\"lib/HTML/FormHandler/Widget/Wrapper/Fieldset.pm\",\"lib/HTML/FormHandler/Widget/Wrapper/Simple.pm\",\"lib/HTML/FormHandler/Widget/Wrapper/SimpleInline.pm\",\"lib/HTML/FormHandler/Widget/Wrapper/Table.pm\",\"lib/HTML/FormHandler/Widget/Wrapper/TableInline.pm\"],\"programRoutines\":[{\"name\":\"HTML::FormHandler::Validate::_apply_actions\"},{\"name\":\"HTML::FormHandler::Render::Simple::render_form_errors\"},{\"name\":\"HTML::FormHandler::Render::Simple::wrap_field\"},{\"name\":\"HTML::FormHandler::Render::Table::render_form_errors\"},{\"name\":\"HTML::FormHandler::Render::Table::wrap_field\"},{\"name\":\"HTML::FormHandler::Widget::Form::Simple::render_form_messages\"},{\"name\":\"HTML::FormHandler::Widget::Theme::BootstrapFormMessages::render_form_messages\"},{\"name\":\"HTML::FormHandler::Widget::Wrapper::Fieldset::wrap_field\"},{\"name\":\"HTML::FormHandler::Widget::Wrapper::Simple::wrap_field\"},{\"name\":\"HTML::FormHandler::Widget::Wrapper::SimpleInline::wrap_field\"},{\"name\":\"HTML::FormHandler::Widget::Wrapper::Table::wrap_field\"},{\"name\":\"HTML::FormHandler::Widget::Wrapper::TableInline::wrap_field\"}],\"repo\":\"https://github.com/gshank/html-formhandler\",\"packageURL\":\"pkg:cpan/HTML-FormHandler\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"0.410000\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-10T17:51:07.811981Z\",\"id\":\"CVE-2026-19872\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/09/08/15\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"http://www.openwall.com/lists/oss-security/2026/09/08/15\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2026-09-08T22:07:16.768Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 6.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-19872\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-10T17:51:07.811981Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-10T17:51:19.632Z\"}}], \"cna\": {\"title\": \"HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"affected\": [{\"repo\": \"https://github.com/gshank/html-formhandler\", \"modules\": [\"HTML::FormHandler\"], \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"0.410000\", \"versionType\": \"custom\"}], \"packageURL\": \"pkg:cpan/HTML-FormHandler\", \"packageName\": \"HTML-FormHandler\", \"programFiles\": [\"lib/HTML/FormHandler/Validate.pm\", \"lib/HTML/FormHandler/Render/Simple.pm\", \"lib/HTML/FormHandler/Render/Table.pm\", \"lib/HTML/FormHandler/Widget/Form/Simple.pm\", \"lib/HTML/FormHandler/Widget/Theme/BootstrapFormMessages.pm\", \"lib/HTML/FormHandler/Widget/Wrapper/Fieldset.pm\", \"lib/HTML/FormHandler/Widget/Wrapper/Simple.pm\", \"lib/HTML/FormHandler/Widget/Wrapper/SimpleInline.pm\", \"lib/HTML/FormHandler/Widget/Wrapper/Table.pm\", \"lib/HTML/FormHandler/Widget/Wrapper/TableInline.pm\"], \"collectionURL\": \"https://cpan.org/modules\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"HTML::FormHandler::Validate::_apply_actions\"}, {\"name\": \"HTML::FormHandler::Render::Simple::render_form_errors\"}, {\"name\": \"HTML::FormHandler::Render::Simple::wrap_field\"}, {\"name\": \"HTML::FormHandler::Render::Table::render_form_errors\"}, {\"name\": \"HTML::FormHandler::Render::Table::wrap_field\"}, {\"name\": \"HTML::FormHandler::Widget::Form::Simple::render_form_messages\"}, {\"name\": \"HTML::FormHandler::Widget::Theme::BootstrapFormMessages::render_form_messages\"}, {\"name\": \"HTML::FormHandler::Widget::Wrapper::Fieldset::wrap_field\"}, {\"name\": \"HTML::FormHandler::Widget::Wrapper::Simple::wrap_field\"}, {\"name\": \"HTML::FormHandler::Widget::Wrapper::SimpleInline::wrap_field\"}, {\"name\": \"HTML::FormHandler::Widget::Wrapper::Table::wrap_field\"}, {\"name\": \"HTML::FormHandler::Widget::Wrapper::TableInline::wrap_field\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to HTML-FormHandler 0.410000 or later.\"}], \"references\": [{\"url\": \"https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch\", \"tags\": [\"patch\"]}, {\"url\": \"https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes\", \"tags\": [\"release-notes\"]}], \"x_generator\": {\"engine\": \"cpansec-cna-tool 0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.\\n\\nThe wrappers and renderers that emit a form\u0027s errors interpolate the error string straight into HTML with no escaping. Two of the library\u0027s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.\\n\\nA field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application\u0027s own escaping template layer rather than the library\u0027s rendering roles are not affected.\\n\\nA request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim\u0027s origin. Re-rendering a rejected value later gives the stored variant.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"shortName\": \"CPANSec\", \"dateUpdated\": \"2026-09-08T20:08:21.896Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-19872\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-10T17:51:23.851Z\", \"dateReserved\": \"2026-08-14T12:49:19.665Z\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"datePublished\": \"2026-09-08T20:08:21.896Z\", \"assignerShortName\": \"CPANSec\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-19872

Vulnerability from fkie_nvd - Published: 2026-09-08 20:17 - Updated: 2026-09-10 18:17

Severity

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/09/08/15

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "HTML::FormHandler"
          ],
          "packageName": "HTML-FormHandler",
          "packageURL": "pkg:cpan/HTML-FormHandler",
          "programFiles": [
            "lib/HTML/FormHandler/Validate.pm",
            "lib/HTML/FormHandler/Render/Simple.pm",
            "lib/HTML/FormHandler/Render/Table.pm",
            "lib/HTML/FormHandler/Widget/Form/Simple.pm",
            "lib/HTML/FormHandler/Widget/Theme/BootstrapFormMessages.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Fieldset.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Simple.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/SimpleInline.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/Table.pm",
            "lib/HTML/FormHandler/Widget/Wrapper/TableInline.pm"
          ],
          "programRoutines": [
            {
              "name": "HTML::FormHandler::Validate::_apply_actions"
            },
            {
              "name": "HTML::FormHandler::Render::Simple::render_form_errors"
            },
            {
              "name": "HTML::FormHandler::Render::Simple::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Render::Table::render_form_errors"
            },
            {
              "name": "HTML::FormHandler::Render::Table::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Form::Simple::render_form_messages"
            },
            {
              "name": "HTML::FormHandler::Widget::Theme::BootstrapFormMessages::render_form_messages"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Fieldset::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Simple::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::SimpleInline::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::Table::wrap_field"
            },
            {
              "name": "HTML::FormHandler::Widget::Wrapper::TableInline::wrap_field"
            }
          ],
          "repo": "https://github.com/gshank/html-formhandler",
          "versions": [
            {
              "lessThan": "0.410000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.\n\nThe wrappers and renderers that emit a form\u0027s errors interpolate the error string straight into HTML with no escaping. Two of the library\u0027s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.\n\nA field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application\u0027s own escaping template layer rather than the library\u0027s rendering roles are not affected.\n\nA request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim\u0027s origin. Re-rendering a rejected value later gives the stored variant."
    }
  ],
  "id": "CVE-2026-19872",
  "lastModified": "2026-09-10T18:17:58.827",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-19872",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-10T17:51:07.811981Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-08T20:17:29.850",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/08/15"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-74PJ-VP7J-2F6M

Vulnerability from github – Published: 2026-09-08 21:34 – Updated: 2026-09-10 18:31

Details

HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.

The wrappers and renderers that emit a form's errors interpolate the error string straight into HTML with no escaping. Two of the library's own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.

A field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application's own escaping template layer rather than the library's rendering roles are not affected.

A request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim's origin. Re-rendering a rejected value later gives the stored variant.

Severity

6.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-19872"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T20:17:29Z",
    "severity": "MODERATE"
  },
  "details": "HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message.\n\nThe wrappers and renderers that emit a form\u0027s errors interpolate the error string straight into HTML with no escaping. Two of the library\u0027s own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error.\n\nA field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application\u0027s own escaping template layer rather than the library\u0027s rendering roles are not affected.\n\nA request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim\u0027s origin. Re-rendering a rejected value later gives the stored variant.",
  "id": "GHSA-74pj-vp7j-2f6m",
  "modified": "2026-09-10T18:31:33Z",
  "published": "2026-09-08T21:34:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19872"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gshank/html-formhandler/commit/2574fdb4561f5c32d44cfbfbb3188345d49eb5a2.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/ABRAXXA/HTML-FormHandler-0.410000/changes"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/08/15"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

ubuntu-cve-2026-19872

Vulnerability from osv_ubuntu

Published

2026-09-09 00:00

Modified

2026-09-09 00:00

Summary

Details

[Unknown description]

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-19872	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-19872	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40064-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40064-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40057-1",
        "0.40064-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40068-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40068-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40067-1",
        "0.40068-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40068-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40068-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40068-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40068-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40068-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40068-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40068-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40068-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40068-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhtml-formhandler-perl",
            "binary_version": "0.40068-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libhtml-formhandler-perl",
        "purl": "pkg:deb/ubuntu/libhtml-formhandler-perl@0.40068-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.40068-2"
      ]
    }
  ],
  "aliases": [],
  "details": "[Unknown description]",
  "id": "UBUNTU-CVE-2026-19872",
  "modified": "2026-09-09T00:00:00Z",
  "published": "2026-09-09T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19872"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-19872"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/43387502/"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-19872"
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-19872 (GCVE-0-2026-19872)

FKIE_CVE-2026-19872

GHSA-74PJ-VP7J-2F6M

ubuntu-cve-2026-19872

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature