Common Weakness Enumeration

CWE-248

Weakness Allowed

Uncaught Exception

Abstraction: Base · Status: Draft

An exception is thrown from a function, but it is not caught.

Mapping guidance

This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.

Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Relationships and members
ChildOf: CWE-705 · View CWE-1000
ChildOf: CWE-755 · View CWE-1000
ChildOf: CWE-703 · View CWE-1305
ChildOf: CWE-703 · View CWE-1340
Modes of introduction
Implementation
Detection methods

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Effectiveness: High

Content history
Submission: 7 Pernicious Kingdoms · 2006-07-19 · CWE Draft 3
Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Time_of_Introduction

Modification: · Veracode · 2008-08-15 · CWE 1.0

Suggested OWASP Top Ten 2004 mapping

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Applicable_Platforms, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2008-09-24 · CWE 1.1

Removed C from Applicable_Platforms

Modification: CWE Content Team · MITRE · 2008-10-14 · CWE 1.0.1

updated Applicable_Platforms

Modification: CWE Content Team · MITRE · 2009-03-10 · CWE 1.3

updated Relationships

Modification: CWE Content Team · MITRE · 2011-03-29 · CWE 1.12

updated Description, Relationships

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Common_Consequences, Demonstrative_Examples, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Demonstrative_Examples, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-06-20 · CWE 3.3

updated Related_Attack_Patterns

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated References

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2020-12-10 · CWE 4.3

updated Relationships

Modification: CWE Content Team · MITRE · 2021-03-15 · CWE 4.4

updated Relationships

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Detection_Factors, Relationships

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes, Relationships

Modification: CWE Content Team · MITRE · 2024-02-29 · CWE 4.14

updated Observed_Examples

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Relationships, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Description, Potential_Mitigations, References

708 vulnerabilities reference this CWE, most recent first.

CVE-2026-123562 (GCVE-0-2026-123562)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:38 – Updated: 2026-11-08 01:38
VLAI
Title
Devalue 5.8.0 before 5.9.3 Denial of Service via stringifyAsync Unhandled Rejection
Summary
devalue (sveltejs/devalue) 5.8.0 before 5.9.3 contains an unhandled promise rejection in stringifyAsync: when serializing multiple promises, a later promise rejecting before an earlier one settles leaves an internal rejection unhandled, even if the caller catches the returned promise. An attacker able to influence the timing or failure of serialized asynchronous values can terminate the Node.js process.
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
sveltejs devalue Affected: 5.8.0 , < 5.9.3 (semver)
Unaffected: 5.9.3 (semver)
    cpe:2.3:a:svelte:devalue:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-18 00:00
Show details on NVD website

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CVE-2026-123533 (GCVE-0-2026-123533)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:37 – Updated: 2026-11-08 01:37
VLAI
Title
Gitoxide before 0.42.0 Denial of Service via Crafted Commit-Graph File
Summary
gix-commitgraph before 0.42.0, as used in gitoxide before 0.61.0, contains a denial of service vulnerability because its commit-graph parser does not validate parent graph positions against the declared commit count or check the EDGE chunk length for 4-byte alignment. Attackers can supply a repository containing a crafted .git/objects/info/commit-graph file to trigger panics that abort gix merge-base, gix blame, and applications embedding gix.
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
GitoxideLabs gitoxide Affected: 0 , < 0.42.0 (semver)
Unaffected: 0.42.0 (semver)
Create a notification for this product.
GitoxideLabs gitoxide Affected: 0 , < 0.61.0 (semver)
Unaffected: 0.61.0 (semver)
Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
Show details on NVD website

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CVE-2026-122315 (GCVE-0-2026-122315)

Vulnerability from cvelistv5 – Published: 2026-11-05 02:25 – Updated: 2026-11-05 02:25
VLAI
Title
Kyverno before 1.19.2 Image Verification Bypass via Attestation Type Panic
Summary
Kyverno before 1.19.2 contains an unchecked type assertion in buildStatementMap that allows unauthenticated attackers to crash the policy engine via crafted attestation statements. Attackers can push an OCI referrer manifest with a non-string type field to bypass image verification under failurePolicy Ignore or crash-loop the reports-controller.
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
kyverno kyverno Affected: 0 , < 1.19.2 (semver)
Unaffected: 1.19.2 (semver)
    cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-21 00:00
Credits
Show details on NVD website

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CVE-2026-122314 (GCVE-0-2026-122314)

Vulnerability from cvelistv5 – Published: 2026-11-05 02:25 – Updated: 2026-11-05 02:25
VLAI
Title
Kyverno before 1.19.2 Denial of Service via Shallow Variable Substitution Panic
Summary
Kyverno before 1.19.2 contains an unchecked type assertion in its variable-substitution engine that allows users who can submit resources to crash the policy engine. Attackers can submit resources with non-string fields referenced by {{- variable }} shallow substitution in policies, causing a panic that yields webhook denial of service and policy bypass under failurePolicy Ignore.
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
kyverno kyverno Affected: 0 , < 1.19.2 (semver)
Unaffected: 1.19.2 (semver)
    cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-21 00:00
Credits
Show details on NVD website

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CVE-2026-121443 (GCVE-0-2026-121443)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:28 – Updated: 2026-11-03 14:28
VLAI
Title
svg-sanitizer from 1.1.0 before 1.1.1 Denial of Service via Unclosed Tag
Summary
svg-sanitizer from 1.1.0 before 1.1.1 contains a denial of service vulnerability that allows remote attackers to crash requests by submitting SVG input ending inside an unclosed tag. Attackers can upload truncated input like a single '<' to trigger an uncaught ValueError from strpos() in hasElementWithTooManyAttributes() or hasInternalDtdSubset() on PHP 8, failing the request.
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
darylldoyle svg-sanitizer Affected: 1.1.0 , < 1.1.1 (semver)
Unaffected: 1.1.1 (semver)
    cpe:2.3:a:drupal:svg_sanitizer:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-20 00:00
Credits
Show details on NVD website

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CVE-2026-121414 (GCVE-0-2026-121414)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:28 – Updated: 2026-11-07 02:54
VLAI
Title
Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 Denial of Service via afterSave Pointer Update
Summary
Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 fails to contain a serialization error when an object update uses a dot notation key targeting a pointer field's object identifier on a class with an afterSave trigger. Attackers, including unauthenticated clients when objects are writable without a session, can send such an update to crash the Node process.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-07 02:54 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
Impacted products
Vendor Product Version
parse-community parse-server Affected: 9.0.0 , < 9.10.6-alpha.2 (semver)
Unaffected: 9.10.6-alpha.2 (semver)
Create a notification for this product.
parse-community parse-server Affected: 0 , < 8.6.110 (semver)
Unaffected: 8.6.110 (semver)
Create a notification for this product.
Date Public
2026-10-19 00:00
Credits
Show details on NVD website

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CVE-2026-121386 (GCVE-0-2026-121386)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:27 – Updated: 2026-11-07 02:47
VLAI
Title
FreeRDP before 3.32.2 Denial of Service via WinPR PNG/JPEG Image Readers
Summary
FreeRDP before 3.32.2 contains a denial of service vulnerability in WinPR's winpr_read_png_from_buffer() and winpr_convert_from_jpeg(), which lack libpng/libjpeg error handling. A malicious RDP server or MITM can offer a malformed PNG or truncated JPEG clipboard payload, causing the client to abort or exit.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-07 02:46 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 0 , < 3.32.2 (semver)
Unaffected: 3.32.2 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-19 00:00
Show details on NVD website

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CVE-2026-120222 (GCVE-0-2026-120222)

Vulnerability from cvelistv5 – Published: 2026-11-06 10:00 – Updated: 2026-11-06 10:00
VLAI
Title
undici vulnerable to Denial of Service via unhandled exception in cache-interceptor response replay
Summary
undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the cache interceptor is composed with a downstream handler that throws during response processing (such as the built-in dump interceptor exceeding its maxSize, or the decompress interceptor rejecting more than five Content-Encoding values), a throw raised asynchronously while a cached response is replayed escapes as an uncaught exception or unhandled promise rejection and terminates the Node.js process. A malicious or compromised HTTP server can crash any such client by serving a cacheable response that triggers the throw on replay, including on a 304 revalidation of a stale entry, so the impact is availability only. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later. As a workaround, avoid composing the cache interceptor with a response handler that throws during response processing until upgrading.
CWE
  • CWE-248 - Uncaught Exception
  • CWE-755 - Improper Handling of Exceptional Conditions
Assigner
openjs CNA under the redhat root
CNA scorecard C 65/100 over 127 records in the last 180 days details
Impacted products
Vendor Product Version
undici undici Affected: 7.0.0 , < 7.30.2 (semver)
Unaffected: 7.30.2 (semver)
Affected: 8.0.0 , < 8.12.4 (semver)
Unaffected: 8.12.4 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-120216 (GCVE-0-2026-120216)

Vulnerability from cvelistv5 – Published: 2026-11-02 11:08 – Updated: 2026-11-02 16:56
VLAI
Title
fastify vulnerable to Denial of Service via uncaught exception on handlerTimeout with streaming responses
Summary
fastify is a web framework for Node.js. In versions 5.8.0 through 5.12.7, when the server is configured with a nonzero handlerTimeout and a route returns a streaming response, a request whose stream has already sent its headers but stays open past the timeout crashes the server. When the timeout fires, Fastify tries to send a new error response on a response that has already started, raising an uncaught ERR_HTTP_HEADERS_SENT that terminates the Node.js process and interrupts any other in-flight requests. An unauthenticated remote client can trigger this with a single request to an affected streaming endpoint, so the impact is availability only, and exploitation requires the non-default handlerTimeout to be set. The default handlerTimeout of 0 is not affected. The issue is fixed in fastify 5.12.8, and users should upgrade to 5.12.8 or later. As a workaround, set handlerTimeout to 0, which disables the affected timeout path.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 16:55 UTC
CWE
Assigner
openjs CNA under the redhat root
CNA scorecard C 65/100 over 127 records in the last 180 days details
Impacted products
Vendor Product Version
fastify fastify Affected: 5.8.0 , < 5.12.8 (semver)
Unaffected: 5.12.8 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-120215 (GCVE-0-2026-120215)

Vulnerability from cvelistv5 – Published: 2026-11-02 10:20 – Updated: 2026-11-02 17:04
VLAI
Title
@fastify/cors vulnerable to Denial of Service on a CORS preflight with the onSend hook
Summary
@fastify/cors is the CORS plugin for the Fastify web framework. In versions 8.2.0 through 11.3.x, an application that registers the plugin with the non-default onSend hook option crashes on a CORS preflight. On an OPTIONS request that carries the Origin and Access-Control-Request-Method headers, the plugin calls reply.send from inside the onSend hook and re-enters the send pipeline, so a second write of the response headers throws an uncaught ERR_HTTP_HEADERS_SENT that can terminate the Node.js process when no process-level handler is installed. An unauthenticated remote client can trigger this with a single preflight request, so the impact is availability only, and exploitation requires the non-default onSend configuration. The issue is fixed in @fastify/cors 11.4.0, where onSend is no longer an accepted hook value and registration fails with a clear error instead of crashing at request time, and users should upgrade to 11.4.0 or later. As a workaround, use any other hook such as the default onRequest, or set preflight to false.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 17:03 UTC
CWE
Assigner
openjs CNA under the redhat root
CNA scorecard C 65/100 over 127 records in the last 180 days details
Impacted products
Vendor Product Version
@fastify/cors @fastify/cors Affected: 8.2.0 , < 11.4.0 (semver)
Unaffected: 11.4.0 (semver)
Create a notification for this product.
Show details on NVD website

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Mitigation
Requirements

The choice between a language which has named or unnamed exceptions needs to be done. While unnamed exceptions exacerbate the chance of not properly dealing with an exception, named exceptions suffer from the up call version of the weak base class problem.

Mitigation
Requirements

A language can be used which requires, at compile time, to catch all serious exceptions. However, one must make sure to use the most current version of the API as new exceptions could be added.

Mitigation
Implementation

Catch all relevant exceptions. This is the recommended solution. Ensure that all exceptions are handled in such a way that you can be sure of the state of your system at any given moment.

No CAPEC attack patterns related to this CWE.