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16 vulnerabilities found for libexpat by libexpat_project

CVE-2025-59375 (GCVE-0-2025-59375)
Vulnerability from nvd
Published
2025-09-15 00:00
Modified
2025-11-04 21:13
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:T/RC:C
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
References
Impacted products
Vendor Product Version
libexpat project libexpat Version: 0   ≤
Create a notification for this product.
Show details on NVD website

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          "url": "https://github.com/libexpat/libexpat/issues/1018"
        },
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          "url": "https://github.com/libexpat/libexpat/pull/1034"
        },
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          "url": "https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74"
        },
        {
          "url": "https://issues.oss-fuzz.com/issues/439133977"
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CVE-2024-45492 (GCVE-0-2024-45492)
Vulnerability from nvd
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2024-45491 (GCVE-0-2024-45491)
Vulnerability from nvd
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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            "product": "expat",
            "vendor": "libexpat",
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        ],
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CVE-2024-45490 (GCVE-0-2024-45490)
Vulnerability from nvd
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2024-28757 (GCVE-0-2024-28757)
Vulnerability from nvd
Published
2024-03-10 00:00
Modified
2025-11-04 22:06
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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      {
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                "cweId": "CWE-776",
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                "type": "CWE"
              }
            ]
          }
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CVE-2023-52426 (GCVE-0-2023-52426)
Vulnerability from nvd
Published
2024-02-04 00:00
Modified
2025-11-04 18:21
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2023-52425 (GCVE-0-2023-52425)
Vulnerability from nvd
Published
2024-02-04 00:00
Modified
2025-11-04 18:21
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
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CVE-2013-0340 (GCVE-0-2013-0340)
Vulnerability from nvd
Published
2014-01-21 18:00
Modified
2025-11-25 16:27
Severity ?
CWE
  • n/a
Summary
expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
References
http://openwall.com/lists/oss-security/2013/02/22/3 mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2013/04/12/6 mailing-list, x_refsource_MLIST
http://www.osvdb.org/90634 vdb-entry, x_refsource_OSVDB
http://securitytracker.com/id?1028213 vdb-entry, x_refsource_SECTRACK
https://security.gentoo.org/glsa/201701-21 vendor-advisory, x_refsource_GENTOO
http://www.securityfocus.com/bid/58233 vdb-entry, x_refsource_BID
https://support.apple.com/kb/HT212805 x_refsource_CONFIRM
https://support.apple.com/kb/HT212804 x_refsource_CONFIRM
https://support.apple.com/kb/HT212807 x_refsource_CONFIRM
https://support.apple.com/kb/HT212819 x_refsource_CONFIRM
https://support.apple.com/kb/HT212814 x_refsource_CONFIRM
https://support.apple.com/kb/HT212815 x_refsource_CONFIRM
http://seclists.org/fulldisclosure/2021/Sep/33 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/34 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/40 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/35 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/38 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/39 mailing-list, x_refsource_FULLDISC
https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d%40%3Cannounce.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rfb2c193360436e230b85547e85a41bea0916916f96c501f5b6fc4702%40%3Cusers.openoffice.apache.org%3E mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/10/07/4 mailing-list, x_refsource_MLIST
http://seclists.org/fulldisclosure/2021/Oct/62 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/63 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/61 mailing-list, x_refsource_FULLDISC
https://github.com/libexpat/libexpat/blob/R_2_4_1/expat/Changes
Impacted products
Vendor Product Version
Version: 0   ≤
Create a notification for this product.
Show details on NVD website

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CVE-2025-59375 (GCVE-0-2025-59375)
Vulnerability from cvelistv5
Published
2025-09-15 00:00
Modified
2025-11-04 21:13
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:T/RC:C
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
References
Impacted products
Vendor Product Version
libexpat project libexpat Version: 0   ≤
Create a notification for this product.
Show details on NVD website

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CVE-2024-45490 (GCVE-0-2024-45490)
Vulnerability from cvelistv5
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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        },
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      },
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          },
          {
            "url": "http://seclists.org/fulldisclosure/2024/Dec/10"
          },
          {
            "url": "http://seclists.org/fulldisclosure/2024/Dec/8"
          },
          {
            "url": "http://seclists.org/fulldisclosure/2024/Dec/7"
          },
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            "url": "http://seclists.org/fulldisclosure/2024/Dec/6"
          },
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            "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00036.html"
          }
        ],
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      ],
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          "lang": "en",
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}

CVE-2024-45491 (GCVE-0-2024-45491)
Vulnerability from cvelistv5
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
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CVE-2024-45492 (GCVE-0-2024-45492)
Vulnerability from cvelistv5
Published
2024-08-30 00:00
Modified
2025-11-04 16:15
Severity ?
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • n/a
Summary
An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2024-28757 (GCVE-0-2024-28757)
Vulnerability from cvelistv5
Published
2024-03-10 00:00
Modified
2025-11-04 22:06
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
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        "metrics": [
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            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
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          },
          {
            "tags": [
              "x_transferred"
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        },
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CVE-2023-52425 (GCVE-0-2023-52425)
Vulnerability from cvelistv5
Published
2024-02-04 00:00
Modified
2025-11-04 18:21
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T18:21:45.774Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://github.com/libexpat/libexpat/pull/789"
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/"
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              "vendor-advisory",
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/"
          },
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            "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00006.html"
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CVE-2023-52426 (GCVE-0-2023-52426)
Vulnerability from cvelistv5
Published
2024-02-04 00:00
Modified
2025-11-04 18:21
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2013-0340 (GCVE-0-2013-0340)
Vulnerability from cvelistv5
Published
2014-01-21 18:00
Modified
2025-11-25 16:27
Severity ?
CWE
  • n/a
Summary
expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
References
http://openwall.com/lists/oss-security/2013/02/22/3 mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2013/04/12/6 mailing-list, x_refsource_MLIST
http://www.osvdb.org/90634 vdb-entry, x_refsource_OSVDB
http://securitytracker.com/id?1028213 vdb-entry, x_refsource_SECTRACK
https://security.gentoo.org/glsa/201701-21 vendor-advisory, x_refsource_GENTOO
http://www.securityfocus.com/bid/58233 vdb-entry, x_refsource_BID
https://support.apple.com/kb/HT212805 x_refsource_CONFIRM
https://support.apple.com/kb/HT212804 x_refsource_CONFIRM
https://support.apple.com/kb/HT212807 x_refsource_CONFIRM
https://support.apple.com/kb/HT212819 x_refsource_CONFIRM
https://support.apple.com/kb/HT212814 x_refsource_CONFIRM
https://support.apple.com/kb/HT212815 x_refsource_CONFIRM
http://seclists.org/fulldisclosure/2021/Sep/33 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/34 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/40 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/35 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/38 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/39 mailing-list, x_refsource_FULLDISC
https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d%40%3Cannounce.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/rfb2c193360436e230b85547e85a41bea0916916f96c501f5b6fc4702%40%3Cusers.openoffice.apache.org%3E mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/10/07/4 mailing-list, x_refsource_MLIST
http://seclists.org/fulldisclosure/2021/Oct/62 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/63 mailing-list, x_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/61 mailing-list, x_refsource_FULLDISC
https://github.com/libexpat/libexpat/blob/R_2_4_1/expat/Changes
Impacted products
Vendor Product Version
Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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          "lang": "en",
          "value": "expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue.  NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE."
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