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14 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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            "defaultStatus": "unknown",
            "product": "expat",
            "vendor": "libexpat",
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                "status": "affected",
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                "versionType": "custom"
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          }
        ],
        "metrics": [
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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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              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
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              {
                "cweId": "CWE-776",
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                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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      },
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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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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

To clipboard 

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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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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 

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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 

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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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