Vulnerability-Lookup

GHSA-H943-HRX6-86CQ

Vulnerability from github – Published: 2026-03-19 12:30 – Updated: 2026-03-19 18:31

Details

XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes.

A :utf8 PerlIO layer, parse_stream() in Expat.xs could overflow the XML input buffer because Perl's read() returns decoded characters while SvPV() gives back multi-byte UTF-8 bytes that can exceed the pre-allocated buffer size. This can cause heap corruption (double free or corruption) and crashes.

Severity ?

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2006-10002"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-19T12:16:16Z",
    "severity": "CRITICAL"
  },
  "details": "XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes.\n\nA :utf8 PerlIO layer, parse_stream() in Expat.xs could overflow the XML input buffer because Perl\u0027s read() returns decoded characters while SvPV() gives back multi-byte UTF-8 bytes that can exceed the pre-allocated buffer size. This can cause heap corruption (double free or corruption) and crashes.",
  "id": "GHSA-h943-hrx6-86cq",
  "modified": "2026-03-19T18:31:17Z",
  "published": "2026-03-19T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2006-10002"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cpan-authors/XML-Parser/issues/64"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cpan-authors/XML-Parser/commit/6b291f4d260fc124a6ec80382b87a918f372bc6b.patch"
    },
    {
      "type": "WEB",
      "url": "https://rt.cpan.org/Ticket/Display.html?id=19859"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/03/19/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2006-10002 (GCVE-0-2006-10002)

Vulnerability from cvelistv5 – Published: 2026-03-19 11:03 – Updated: 2026-03-19 17:20

Title

XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes

Summary

XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes. A :utf8 PerlIO layer, parse_stream() in Expat.xs could overflow the XML input buffer because Perl's read() returns decoded characters while SvPV() gives back multi-byte UTF-8 bytes that can exceed the pre-allocated buffer size. This can cause heap corruption (double free or corruption) and crashes.

Severity ?

9.8 (Critical)


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

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-176 - Improper Handling of Unicode Encoding

Assigner

CPANSec

References

URL

Tags

	https://rt.cpan.org/Ticket/Display.html?id=19859	issue-tracking
	https://github.com/cpan-authors/XML-Parser/issues/64	issue-tracking
	https://github.com/cpan-authors/XML-Parser/commit…	patch

Impacted products

	Vendor	Product	Version
	TODDR	XML::Parser	Affected: 0 , ≤ 2.47 (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2006-10002",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-19T17:11:03.634936Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-19T17:11:26.953Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-03-19T17:20:56.821Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/03/19/1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "XML-Parser",
          "product": "XML::Parser",
          "programFiles": [
            "Expat.xs"
          ],
          "programRoutines": [
            {
              "name": "parse_stream"
            }
          ],
          "repo": "http://github.com/toddr/XML-Parser",
          "vendor": "TODDR",
          "versions": [
            {
              "lessThanOrEqual": "2.47",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes.\n\nA :utf8 PerlIO layer, parse_stream() in Expat.xs could overflow the XML input buffer because Perl\u0027s read() returns decoded characters while SvPV() gives back multi-byte UTF-8 bytes that can exceed the pre-allocated buffer size. This can cause heap corruption (double free or corruption) and crashes."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122 Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-176",
              "description": "CWE-176 Improper Handling of Unicode Encoding",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-19T11:03:46.888Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://rt.cpan.org/Ticket/Display.html?id=19859"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/cpan-authors/XML-Parser/issues/64"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/cpan-authors/XML-Parser/commit/6b291f4d260fc124a6ec80382b87a918f372bc6b.patch"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Apply the patch that has been publicly available since 2006-06-13 or upgrade to version 2.48 or later when it is released."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2006-06-13T00:00:00.000Z",
          "value": "Issue logged in Request Tracker for XML::Parser"
        },
        {
          "lang": "en",
          "time": "2006-08-11T00:00:00.000Z",
          "value": "Patch provided in Request Tracker for XML::Parser"
        },
        {
          "lang": "en",
          "time": "2019-09-24T00:00:00.000Z",
          "value": "Issue migrated to github issue tracker"
        },
        {
          "lang": "en",
          "time": "2019-09-24T00:00:00.000Z",
          "value": "Patch provided in github issue tracker"
        },
        {
          "lang": "en",
          "time": "2026-03-16T00:00:00.000Z",
          "value": "PR created and commit merged to git repo"
        }
      ],
      "title": "XML::Parser versions through 2.47 for Perl could overflow the pre-allocated buffer size cause a heap corruption (double free or corruption) and crashes",
      "workarounds": [
        {
          "lang": "en",
          "value": "Apply the patch that has been publicly available since 2006-06-13."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2006-10002",
    "datePublished": "2026-03-19T11:03:46.888Z",
    "dateReserved": "2026-03-16T22:47:45.685Z",
    "dateUpdated": "2026-03-19T17:20:56.821Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-H943-HRX6-86CQ

CVE-2006-10002 (GCVE-0-2006-10002)

Tags

Sightings

Nomenclature