Common Weakness Enumeration

CWE-755

Discouraged

Improper Handling of Exceptional Conditions

Abstraction: Class · Status: Incomplete

The product does not handle or incorrectly handles an exceptional condition.

731 vulnerabilities reference this CWE, most recent first.

CVE-2026-81516 (GCVE-0-2026-81516)

Vulnerability from cvelistv5 – Published: 2026-09-17 15:38 – Updated: 2026-09-17 19:19
VLAI
Title
Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)
Summary
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, ConsulDiscoveryClient constructs ConsulServiceInstance objects by parsing each registration's secure metadata with a strict Boolean conversion. A principal that can register a Consul service can supply a secure value other than true or false, causing the exception from one instance to abort construction of the entire instance list and make the targeted service undiscoverable. When GetAllInstancesAsync enumerates all services, one malformed instance can abort enumeration across every service. The outage persists until the offending registration is removed. This issue is fixed in version 4.3.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:06 UTC
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
SteeltoeOSS security-advisories Affected: >= 4.0.0, < 4.3.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-81515 (GCVE-0-2026-81515)

Vulnerability from cvelistv5 – Published: 2026-09-17 15:40 – Updated: 2026-09-21 20:50
VLAI
Title
Steeltoe.Discovery.Eureka: malformed enum/bool/timestamp field aborts entire registry fetch (DoS)
Summary
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, EurekaDiscoveryClient deserializes the registry response as one unit, and an unrecognized actionType or status, a non-Boolean isCoordinatingDiscoveryServer, or a nonnumeric timestamp can abort the entire response. A principal that can register or update an instance can cause all connected Steeltoe clients to receive an empty or stale instance list until the malformed registration is removed. The JsonInstanceInfoConverter, BoolStringJsonConverter, and LongStringJsonConverter parsing paths are affected. This issue is distinct from the earlier DataCenterInfo.name parsing vulnerability. This issue is fixed in version 4.3.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 20:50 UTC
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
SteeltoeOSS security-advisories Affected: >= 4.0.0, < 4.3.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-63450 (GCVE-0-2026-63450)

Vulnerability from cvelistv5 – Published: 2026-09-18 20:13 – Updated: 2026-09-23 19:45
VLAI
Title
Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection
Summary
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 19:45 UTC
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
OISF suricata Affected: < 8.0.6
Create a notification for this product.
Show details on NVD website

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CVE-2026-62994 (GCVE-0-2026-62994)

Vulnerability from cvelistv5 – Published: 2026-07-16 19:39 – Updated: 2026-07-17 11:12
VLAI
Title
CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
Summary
CoreDNS is a DNS server written in Go. From 1.9.4 until 1.14.5, a network DNS client allowed to request AXFR for a CoreDNS zone can trigger a panic when CoreDNS is configured with k8s_external headless-service zone transfers and Kubernetes contains a headless service endpoint with no declared ports; plugin/kubernetes/object/endpoint.go creates Port: -1, plugin/k8s_external/msg_to_dns.go skips that service, plugin/k8s_external/transfer.go sends an empty []dns.RR batch, and plugin/transfer/transfer.go indexes records[0] without checking the batch is non-empty. This issue is fixed in version 1.14.5.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 11:12 UTC
CWE
  • CWE-248 - Uncaught Exception
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
coredns coredns Affected: >= 1.9.4, < 1.14.5
Create a notification for this product.
Show details on NVD website

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CVE-2026-59952 (GCVE-0-2026-59952)

Vulnerability from cvelistv5 – Published: 2026-07-30 00:10 – Updated: 2026-07-30 14:42
VLAI
Title
Valibot: record() issue paths can make flatten() throw for inherited Object property names
Summary
Valibot helps validate data using a schema. Versions prior to 1.4.2 can throw a TypeError inside its flatten() helper when validation issues contain attacker-controlled object keys such as toString, valueOf, or hasOwnProperty. The issue is reachable through normal record() validation. record() intentionally filters __proto__, prototype, and constructor, but it still accepts other own keys that collide with inherited Object.prototype properties. If the record key schema or value schema rejects such an entry, Valibot creates an issue path containing that key. Passing the resulting issues to Valibot's documented flatten() helper causes flatErrors.nested[dotPath] to resolve to the inherited method instead of an own error array, and the helper calls .push(...) on that function. This is not a global prototype pollution issue. The impact is availability/error handling: applications that validate user-controlled objects with record() and flatten validation errors for API responses can crash the request path with a TypeError instead of returning structured validation errors. This issue has been fixed in version 1.4.2.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:41 UTC
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
open-circle valibot Affected: < 1.4.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-59927 (GCVE-0-2026-59927)

Vulnerability from cvelistv5 – Published: 2026-07-08 16:24 – Updated: 2026-07-08 19:45
VLAI
Title
Mistune directives/include: mutual `.. include::` recursion crashes the renderer with `RecursionError`, denial of service via two attacker-controlled markdown files
Summary
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise RecursionError, and crash the rendering request. This issue is fixed in version 3.3.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 19:45 UTC
CWE
  • CWE-674 - Uncontrolled Recursion
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
lepture mistune Affected: < 3.3.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-59162 (GCVE-0-2026-59162)

Vulnerability from cvelistv5 – Published: 2026-07-10 15:51 – Updated: 2026-07-10 18:40
VLAI
Title
Excelize: Negative shared-string index causes panic in GetCellValue and GetRows
Summary
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, Excelize parses shared-string cell values with strconv.Atoi and checks only the upper bound before indexing the shared string slice, allowing an XLSX file containing a shared-string cell with -1 to trigger sharedStrings[-1] and panic when read through GetCellValue or GetRows. This issue is fixed in version 2.11.0.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 18:40 UTC
CWE
  • CWE-248 - Uncaught Exception
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
qax-os excelize Affected: < 2.11.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-55577 (GCVE-0-2026-55577)

Vulnerability from cvelistv5 – Published: 2026-07-01 18:56 – Updated: 2026-07-01 19:24
VLAI
Title
ImageMagick: Heap Buffer Overflow in ImageMagick MVG decoder
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-51 and 7.1.2-26, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 19:24 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-755 - Improper Handling of Exceptional Conditions
  • CWE-787 - Out-of-bounds Write
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: >= 7.0.1-0, < 7.1.2-26
Affected: < 6.9.13-51
Create a notification for this product.
Show details on NVD website

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CVE-2026-54775 (GCVE-0-2026-54775)

Vulnerability from cvelistv5 – Published: 2026-07-08 22:13 – Updated: 2026-07-09 14:20
VLAI
Title
CoreWCF: Kafka consume pump halts permanently on a Kafka tombstone (null-value record), causing persistent endpoint denial of service.
Summary
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, a CoreWCF service listening on a Kafka topic stops processing new records from that topic when KafkaTransportPump receives a null-value tombstone record, causing a persistent endpoint denial of service for attackers with produce permission. This issue is fixed in versions 1.8.1 and 1.9.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 14:20 UTC
CWE
  • CWE-248 - Uncaught Exception
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
CoreWCF CoreWCF Affected: >= 1.9.0, < 1.9.1
Affected: < 1.8.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-54632 (GCVE-0-2026-54632)

Vulnerability from cvelistv5 – Published: 2026-09-14 19:58 – Updated: 2026-09-15 14:43
VLAI
Title
SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)
Summary
SIPSorcery is a WebRTC, SIP, and VoIP library for C# and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while UdpReceiver.EndReceiveFrom closes the channel when those operations raise a non-socket exception. A remote party can send a single short RTP packet or malformed zero-to-seven-byte STUN address attribute to the shared RTP/ICE socket, including during ICE connectivity checks before DTLS or STUN MESSAGE-INTEGRITY verification, and terminate the active RTP or WebRTC media session. The attacker must reach or learn the advertised ephemeral RTP/ICE port, but no authentication or user interaction is required, and the impact is limited to availability. This issue is fixed in version 10.0.9.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:43 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-755 - Improper Handling of Exceptional Conditions
Impacted products
Vendor Product Version
sipsorcery-org sipsorcery Affected: < 10.0.9
Create a notification for this product.
Show details on NVD website

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No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.