Common Weakness Enumeration

CWE-416

Allowed

Use After Free

Abstraction: Variant · Status: Stable

API response cwe.mitre.org

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

9806 vulnerabilities reference this CWE, most recent first.

CVE-2026-57437 (GCVE-0-2026-57437)

Vulnerability from cvelistv5 – Published: 2026-06-25 14:34 – Updated: 2026-06-25 15:00
VLAI
Title
Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond document lifetime
Summary
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::XPathContext did not keep its source document alive for garbage collection. If an XPathContext outlived its document and the document was collected, evaluating an XPath expression could read invalid memory and potentially segfault. This is only reachable when application code constructs an XPathContext directly and lets the document become unreachable while continuing to use the context. The normal Document#xpath, #css, and related search methods are not affected, and it is not triggerable by malicious document input. This vulnerability is fixed in 1.19.4.
Severity
1.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
sparklemotion nokogiri Affected: < 1.19.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57436 (GCVE-0-2026-57436)

Vulnerability from cvelistv5 – Published: 2026-06-25 14:33 – Updated: 2026-06-25 23:27
VLAI
Title
Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type
Summary
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4.
Severity
1.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
sparklemotion nokogiri Affected: < 1.19.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57435 (GCVE-0-2026-57435)

Vulnerability from cvelistv5 – Published: 2026-06-25 14:32 – Updated: 2026-06-25 14:53
VLAI
Title
Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`
Summary
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri’s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node, Nokogiri::XML::Attr#value= could free the underlying native child node while the wrapper remained reachable through the document node cache. A later use of the freed child node or a Ruby GC mark could dereference an invalid pointer, causing an invalid read and a possible segfault. This vulnerability is fixed in 1.19.4.
Severity
1.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
sparklemotion nokogiri Affected: < 1.19.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57256 (GCVE-0-2026-57256)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:35 – Updated: 2026-07-09 17:37
VLAI
Title
Foxit Editor/Reader List Box Format Use-After-Free Vulnerability
Summary
When the application opens a PDF and executes JavaScript, it performs abnormal operations on the list box field, and this operation is repeated after the form is reset. During this process, the application failed to adequately verify the validity of the form objects and their internal dictionary pointers, resulting in accessing internal members of invalid or improperly initialized fields. This led to an illegal pointer read, ultimately causing the application to crash.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.3 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
KPC of Cisco Talos
Show details on NVD website
To clipboard 

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CVE-2026-57252 (GCVE-0-2026-57252)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 12:43
VLAI
Title
Foxit PDF Editor/Reader AcroForm Use-After-Free Remote Code Execution Vulnerability
Summary
When the application opens a PDF file, during the process of JavaScript deleting pages and removing attachment annotations, it will cause the attachment panel to continue accessing invalid pointers, eventually leading to the application crashing.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
Anonymous working with TrendAI Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2026-57250 (GCVE-0-2026-57250)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 13:13
VLAI
Title
Foxit PDF Editor/Reader Form Field Use-After-Free Vulnerability
Summary
When the application opens a PDF and JavaScript resets the form fields, the script re-enters the interface. The underlying native object is damaged, but the application does not perform validation. The function call on the damaged object leads to the application crashing.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.3 and earlier
Affected: Versions 13.2.3 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
XuPeng
Show details on NVD website
To clipboard 

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CVE-2026-57249 (GCVE-0-2026-57249)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 12:40
VLAI
Title
Foxit PDF Editor/Reader Annotation Use-After-Free Vulnerability
Summary
After the application opened the PDF file, the script first reset the annotation status, then triggered the reset form event by additional action. During the re-entry process, the application access invalid objects and crashed.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
XuPeng
Show details on NVD website
To clipboard 

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CVE-2026-57247 (GCVE-0-2026-57247)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 13:14
VLAI
Title
Foxit PDF Editor/Reader Field Use-After-Free Vulnerability
Summary
The application re-enters the document structure via field processing and deletes the current page, and then continues using the field objects obtained before deletion, triggering an illegal read and crashing.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.3 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
XuPeng
Show details on NVD website
To clipboard 

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CVE-2026-57245 (GCVE-0-2026-57245)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 13:44
VLAI
Title
Foxit PDF Editor/Reader Signature Hyperlink Use-After-Free Vulnerability
Summary
When the application opens a PDF, traverses and builds the annotation elements related to hyperlinks, it fails to validate the abnormal annotation relationships and field combinations. This results in the internal objects entering an invalid state. Eventually, during the destruction phase, an invalid pointer write occurred, causing the application to crash.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
XuPeng
Show details on NVD website
To clipboard 

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CVE-2026-57244 (GCVE-0-2026-57244)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 13:14
VLAI
Title
Foxit PDF Editor/Reader Form Control Use-After-Free Vulnerability
Summary
After JavaScript resetting the form, the synchronization process lacks re-entry protection and object lifecycle verification, resulting in the failure of the control pointer during the traversal process. After the pointer fails, it still continues to dereference, causing the application to crash.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.3 and earlier
Affected: Versions 13.2.3 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
XuPeng
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

Strategy: Language Selection

Choose a language that provides automatic memory management.

Mitigation
Implementation

Strategy: Attack Surface Reduction

When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.

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