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    22 vulnerabilities found for libexpat by libexpat project

    CVE-2026-56132 (GCVE-0-2026-56132)

    Vulnerability from cvelistv5 – Published: 2026-06-19 03:00 – Updated: 2026-06-19 03:00
    VLAI
    Summary
    In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.
    CWE
    • CWE-821 - Incorrect Synchronization
    Assigner
    References
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.2 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-56131 (GCVE-0-2026-56131)

    Vulnerability from cvelistv5 – Published: 2026-06-19 02:56 – Updated: 2026-06-19 02:56
    VLAI
    Summary
    libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.2 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-50219 (GCVE-0-2026-50219)

    Vulnerability from cvelistv5 – Published: 2026-06-04 04:20 – Updated: 2026-06-04 12:36
    VLAI
    Summary
    libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.2 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-45186 (GCVE-0-2026-45186)

    Vulnerability from cvelistv5 – Published: 2026-05-10 06:36 – Updated: 2026-05-11 22:23
    VLAI
    Summary
    In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.1 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-41080 (GCVE-0-2026-41080)

    Vulnerability from cvelistv5 – Published: 2026-04-16 16:52 – Updated: 2026-05-18 20:22
    VLAI
    Summary
    libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.0 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-32778 (GCVE-0-2026-32778)

    Vulnerability from cvelistv5 – Published: 2026-03-16 07:02 – Updated: 2026-03-17 14:39
    VLAI
    Summary
    libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
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    CVE-2026-32777 (GCVE-0-2026-32777)

    Vulnerability from cvelistv5 – Published: 2026-03-16 06:58 – Updated: 2026-03-16 14:55
    VLAI
    Summary
    libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-32776 (GCVE-0-2026-32776)

    Vulnerability from cvelistv5 – Published: 2026-03-16 06:54 – Updated: 2026-03-16 14:58
    VLAI
    Summary
    libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-25210 (GCVE-0-2026-25210)

    Vulnerability from cvelistv5 – Published: 2026-01-30 06:40 – Updated: 2026-06-02 13:01
    VLAI
    Summary
    In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    Impacted products
    Show details on NVD website

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    CVE-2026-24515 (GCVE-0-2026-24515)

    Vulnerability from cvelistv5 – Published: 2026-01-23 07:46 – Updated: 2026-06-02 13:01
    VLAI
    Summary
    In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Show details on NVD website

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    CVE-2025-66382 (GCVE-0-2025-66382)

    Vulnerability from cvelistv5 – Published: 2025-11-28 00:00 – Updated: 2026-06-02 13:00
    VLAI
    Summary
    In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    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 – Updated: 2026-05-12 12:08
    VLAI
    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.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
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    libexpat project libexpat Affected: 0 , < 2.7.2 (semver)
    Create a notification for this product.
    Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCH328 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM324 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM328 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM332 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24 V DC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24 V DC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-50219 (GCVE-0-2026-50219)

    Vulnerability from nvd – Published: 2026-06-04 04:20 – Updated: 2026-06-04 12:36
    VLAI
    Summary
    libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.2 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-45186 (GCVE-0-2026-45186)

    Vulnerability from nvd – Published: 2026-05-10 06:36 – Updated: 2026-05-11 22:23
    VLAI
    Summary
    In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.1 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-41080 (GCVE-0-2026-41080)

    Vulnerability from nvd – Published: 2026-04-16 16:52 – Updated: 2026-05-18 20:22
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    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.8.0 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-32778 (GCVE-0-2026-32778)

    Vulnerability from nvd – Published: 2026-03-16 07:02 – Updated: 2026-03-17 14:39
    VLAI
    Summary
    libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-32777 (GCVE-0-2026-32777)

    Vulnerability from nvd – Published: 2026-03-16 06:58 – Updated: 2026-03-16 14:55
    VLAI
    Summary
    libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-32776 (GCVE-0-2026-32776)

    Vulnerability from nvd – Published: 2026-03-16 06:54 – Updated: 2026-03-16 14:58
    VLAI
    Summary
    libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-25210 (GCVE-0-2026-25210)

    Vulnerability from nvd – Published: 2026-01-30 06:40 – Updated: 2026-06-02 13:01
    VLAI
    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    Impacted products
    Show details on NVD website

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    CVE-2026-24515 (GCVE-0-2026-24515)

    Vulnerability from nvd – Published: 2026-01-23 07:46 – Updated: 2026-06-02 13:01
    VLAI
    Summary
    In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Impacted products
    Show details on NVD website

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    CVE-2025-66382 (GCVE-0-2025-66382)

    Vulnerability from nvd – Published: 2025-11-28 00:00 – Updated: 2026-06-02 13:00
    VLAI
    Summary
    In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    Show details on NVD website

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    CVE-2025-59375 (GCVE-0-2025-59375)

    Vulnerability from nvd – Published: 2025-09-15 00:00 – Updated: 2026-05-12 12:08
    VLAI
    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.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    Impacted products
    Vendor Product Version
    libexpat project libexpat Affected: 0 , < 2.7.2 (semver)
    Create a notification for this product.
    Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCH328 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM324 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM328 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XCM332 Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24 V DC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24 V DC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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