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CVE-2026-76957 (GCVE-0-2026-76957)

Vulnerability from nvd – Published: 2026-08-20 04:28 – Updated: 2026-08-20 15:26

Summary

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 15:05 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1322
https://github.com/libexpat/libexpat/pull/1329

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.4 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

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CVE-2026-76956 (GCVE-0-2026-76956)

Vulnerability from nvd – Published: 2026-08-20 04:22 – Updated: 2026-08-20 17:42

Summary

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 15:05 UTC

CWE

CWE-394 - Unexpected Status Code or Return Value

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1326
https://github.com/libexpat/libexpat/pull/1329

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 2.8.2 , < 2.8.4 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-66046 (GCVE-0-2026-66046)

Vulnerability from nvd – Published: 2026-08-18 14:10 – Updated: 2026-08-21 11:20 X_Open Source

Title

Expat Denial of Service via storeAtts() Quadratic Complexity

Summary

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes to an application parsing untrusted XML to cause excessive CPU consumption, resulting in denial of service without requiring authentication, external entity resolution, or non-default parser options.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 13:48 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1321	issue-tracking
https://www.vulncheck.com/advisories/expat-denial…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , ≤ 2.8.3 (semver)

Date Public

2026-08-13 00:00

Credits

Fabian Wahle (Hap Security) Sebastian Pipping VulnCheck

Show details on NVD website

JSON

To clipboard

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CVE-2026-72522 (GCVE-0-2026-72522)

Vulnerability from nvd – Published: 2026-08-10 03:28 – Updated: 2026-08-13 14:08

Summary

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 12:39 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1296
https://bugzilla.mozilla.org/show_bug.cgi?id=2053153
http://www.openwall.com/lists/oss-security/2026/08/11/5

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.3 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56412 (GCVE-0-2026-56412)

Vulnerability from nvd – Published: 2026-06-21 15:58 – Updated: 2026-06-22 16:31

Summary

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 16:30 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1278

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56411 (GCVE-0-2026-56411)

Vulnerability from nvd – Published: 2026-06-21 15:56 – Updated: 2026-06-22 16:31

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 16:31 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1263

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56410 (GCVE-0-2026-56410)

Vulnerability from nvd – Published: 2026-06-21 15:55 – Updated: 2026-06-22 15:56

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:56 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1252

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56409 (GCVE-0-2026-56409)

Vulnerability from nvd – Published: 2026-06-21 15:52 – Updated: 2026-06-22 15:56

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:56 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1259

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

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To clipboard

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CVE-2026-56408 (GCVE-0-2026-56408)

Vulnerability from nvd – Published: 2026-06-21 15:51 – Updated: 2026-06-22 15:55

Summary

libexpat before 2.8.2 has an integer overflow in copyString.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:55 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/commit/16e2e…

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56407 (GCVE-0-2026-56407)

Vulnerability from nvd – Published: 2026-06-21 15:49 – Updated: 2026-06-22 15:55

Summary

libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:54 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1262

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56406 (GCVE-0-2026-56406)

Vulnerability from nvd – Published: 2026-06-21 15:48 – Updated: 2026-06-22 17:02

Summary

libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:02 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1255

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56405 (GCVE-0-2026-56405)

Vulnerability from nvd – Published: 2026-06-21 15:47 – Updated: 2026-06-22 17:03

Summary

libexpat before 2.8.2 has an integer overflow in getAttributeId.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:03 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1251

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56404 (GCVE-0-2026-56404)

Vulnerability from nvd – Published: 2026-06-21 15:45 – Updated: 2026-06-22 17:05

Summary

libexpat before 2.8.2 has an integer overflow in addBinding.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:04 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1249

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56403 (GCVE-0-2026-56403)

Vulnerability from nvd – Published: 2026-06-21 15:43 – Updated: 2026-06-22 17:05

Summary

libexpat before 2.8.2 has an integer overflow in storeAtts.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:05 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1232

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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

Vulnerability from nvd – Published: 2026-06-19 03:00 – Updated: 2026-06-22 14:59

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.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 14:59 UTC

CWE

CWE-821 - Incorrect Synchronization

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1272

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

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

Vulnerability from nvd – Published: 2026-06-19 02:56 – Updated: 2026-06-22 14:58

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).

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 14:58 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1267

Impacted products

1 product

Vendor	Product	Version
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Show details on NVD website

JSON

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CVE-2026-76957 (GCVE-0-2026-76957)

Vulnerability from cvelistv5 – Published: 2026-08-20 04:28 – Updated: 2026-08-20 15:26

Summary

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 15:05 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1322
https://github.com/libexpat/libexpat/pull/1329

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.4 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-76956 (GCVE-0-2026-76956)

Vulnerability from cvelistv5 – Published: 2026-08-20 04:22 – Updated: 2026-08-20 17:42

Summary

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 15:05 UTC

CWE

CWE-394 - Unexpected Status Code or Return Value

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1326
https://github.com/libexpat/libexpat/pull/1329

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 2.8.2 , < 2.8.4 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

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CVE-2026-66046 (GCVE-0-2026-66046)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:10 – Updated: 2026-08-21 11:20 X_Open Source

Title

Expat Denial of Service via storeAtts() Quadratic Complexity

Summary

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes to an application parsing untrusted XML to cause excessive CPU consumption, resulting in denial of service without requiring authentication, external entity resolution, or non-default parser options.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 13:48 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1321	issue-tracking
https://www.vulncheck.com/advisories/expat-denial…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , ≤ 2.8.3 (semver)

Date Public

2026-08-13 00:00

Credits

Fabian Wahle (Hap Security) Sebastian Pipping VulnCheck

Show details on NVD website

JSON

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CVE-2026-72522 (GCVE-0-2026-72522)

Vulnerability from cvelistv5 – Published: 2026-08-10 03:28 – Updated: 2026-08-13 14:08

Summary

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 12:39 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/libexpat/libexpat/pull/1296
https://bugzilla.mozilla.org/show_bug.cgi?id=2053153
http://www.openwall.com/lists/oss-security/2026/08/11/5

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.3 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

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CVE-2026-56412 (GCVE-0-2026-56412)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:58 – Updated: 2026-06-22 16:31

Summary

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 16:30 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1278

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

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JSON

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CVE-2026-56411 (GCVE-0-2026-56411)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:56 – Updated: 2026-06-22 16:31

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 16:31 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1263

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

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CVE-2026-56410 (GCVE-0-2026-56410)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:55 – Updated: 2026-06-22 15:56

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:56 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1252

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

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CVE-2026-56409 (GCVE-0-2026-56409)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:52 – Updated: 2026-06-22 15:56

Summary

xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:56 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1259

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

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CVE-2026-56408 (GCVE-0-2026-56408)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:51 – Updated: 2026-06-22 15:55

Summary

libexpat before 2.8.2 has an integer overflow in copyString.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:55 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/commit/16e2e…

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56407 (GCVE-0-2026-56407)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:49 – Updated: 2026-06-22 15:55

Summary

libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:54 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1262

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56406 (GCVE-0-2026-56406)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:48 – Updated: 2026-06-22 17:02

Summary

libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:02 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1255

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56405 (GCVE-0-2026-56405)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:47 – Updated: 2026-06-22 17:03

Summary

libexpat before 2.8.2 has an integer overflow in getAttributeId.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:03 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1251

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56404 (GCVE-0-2026-56404)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:45 – Updated: 2026-06-22 17:05

Summary

libexpat before 2.8.2 has an integer overflow in addBinding.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:04 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1249

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-56403 (GCVE-0-2026-56403)

Vulnerability from cvelistv5 – Published: 2026-06-21 15:43 – Updated: 2026-06-22 17:05

Summary

libexpat before 2.8.2 has an integer overflow in storeAtts.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:05 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libexpat/libexpat/pull/1232

Impacted products

1 product

Vendor	Product	Version
libexpat project	libexpat	Affected: 0 , < 2.8.2 (semver) cpe:2.3:a:libexpat_project:libexpat::::::::

Show details on NVD website

JSON

To clipboard

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Find a vulnerability

Search criteria

52 vulnerabilities by libexpat project

CVE-2026-76957 (GCVE-0-2026-76957)

CVE-2026-76956 (GCVE-0-2026-76956)

CVE-2026-66046 (GCVE-0-2026-66046)

CVE-2026-72522 (GCVE-0-2026-72522)

CVE-2026-56412 (GCVE-0-2026-56412)

CVE-2026-56411 (GCVE-0-2026-56411)

CVE-2026-56410 (GCVE-0-2026-56410)

CVE-2026-56409 (GCVE-0-2026-56409)

CVE-2026-56408 (GCVE-0-2026-56408)

CVE-2026-56407 (GCVE-0-2026-56407)

CVE-2026-56406 (GCVE-0-2026-56406)

CVE-2026-56405 (GCVE-0-2026-56405)

CVE-2026-56404 (GCVE-0-2026-56404)

CVE-2026-56403 (GCVE-0-2026-56403)

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

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

CVE-2026-76957 (GCVE-0-2026-76957)

CVE-2026-76956 (GCVE-0-2026-76956)

CVE-2026-66046 (GCVE-0-2026-66046)

CVE-2026-72522 (GCVE-0-2026-72522)

CVE-2026-56412 (GCVE-0-2026-56412)

CVE-2026-56411 (GCVE-0-2026-56411)

CVE-2026-56410 (GCVE-0-2026-56410)

CVE-2026-56409 (GCVE-0-2026-56409)

CVE-2026-56408 (GCVE-0-2026-56408)

CVE-2026-56407 (GCVE-0-2026-56407)

CVE-2026-56406 (GCVE-0-2026-56406)

CVE-2026-56405 (GCVE-0-2026-56405)

CVE-2026-56404 (GCVE-0-2026-56404)

CVE-2026-56403 (GCVE-0-2026-56403)