Common Weakness Enumeration
CWE-674
Allowed-with-ReviewUncontrolled Recursion
Abstraction: Class · Status: Draft
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
838 vulnerabilities reference this CWE, most recent first.
CVE-2026-72647 (GCVE-0-2026-72647)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads (CAPEC-230). An authenticated user holding only read privileges on a single index can submit one specially crafted search request whose deeply nested structure is processed without a depth limit, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72638 (GCVE-0-2026-72638)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72636 (GCVE-0-2026-72636)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:14 – Updated: 2026-08-13 20:26
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:29 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
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CVE-2026-69378 (GCVE-0-2026-69378)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:12 – Updated: 2026-10-01 22:54
VLAI
EPSS
VEX
Title
Microsoft Exchange Server Denial of Service Vulnerability
Summary
Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 20:41 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 |
Affected:
15.01.0.0 , < 15.01.2507.073
(custom)
|
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 |
Affected:
15.02.0.0 , < 15.02.1544.046
(custom)
|
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 |
Affected:
15.02.0.0 , < 15.02.1748.051
(custom)
|
|
| Microsoft | Microsoft Exchange Server Subscription Edition RTM |
Affected:
15.02.0.0 , < 15.02.2562.049
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-69220 (GCVE-0-2026-69220)
Vulnerability from cvelistv5 – Published: 2026-08-18 16:25 – Updated: 2026-08-18 17:45
VLAI
EPSS
VEX
Title
RabbitMQ Java client ValueReader: Unbounded recursive table/array nesting causes StackOverflowError DoS
Summary
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.1, src/main/java/com/rabbitmq/client/impl/ValueReader.java permits ValueReader.readTable and ValueReader.readArray to call ValueReader.readFieldValue recursively for AMQP table type F and AMQP array type A values without a nesting-depth limit. A malicious AMQP server or network intermediary can send approximately 580 nested table levels in the pre-authentication connection.start frame, fitting within the default 131072-byte frame maximum, to trigger StackOverflowError. The error terminates the client input processing thread and causes denial of service. This issue is fixed in version 5.33.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 17:44 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_CONFIRM |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| rabbitmq | rabbitmq-java-client |
Affected:
< 5.33.1
|
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CVE-2026-68073 (GCVE-0-2026-68073)
Vulnerability from cvelistv5 – Published: 2026-08-05 05:32 – Updated: 2026-08-06 15:37
VLAI
EPSS
VEX
Title
Apache Qpid Broker-J: Unbounded type nesting can lead to pre-authentication stack overflow
Summary
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Broker-J: through 10.0.1.
Users are recommended to upgrade to version 10.1.0, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:08 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/djz1gnrk882vzjo8r… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Qpid Broker-J |
Affected:
0 , ≤ 10.0.1
(semver)
|
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CVE-2026-67590 (GCVE-0-2026-67590)
Vulnerability from cvelistv5 – Published: 2026-08-05 05:33 – Updated: 2026-08-06 15:38
VLAI
EPSS
VEX
Title
Apache Qpid ProtonJ2: Unbounded type nesting can lead to pre-authentication stackoverflow
Summary
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid ProtonJ2: through 1.1.0.
Users are recommended to upgrade to version 1.2.0, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:38 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/kmov6k7f3moqy01m1… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Qpid ProtonJ2 |
Affected:
0 , ≤ 1.1.0
(semver)
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CVE-2026-67552 (GCVE-0-2026-67552)
Vulnerability from cvelistv5 – Published: 2026-08-05 05:32 – Updated: 2026-08-06 15:37
VLAI
EPSS
VEX
Title
Apache Qpid Proton Dotnet: Unbounded type nesting can lead to pre-authentication stackoverflow
Summary
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-Dotnet through 1.0.0.
Users are recommended to upgrade to version 1.1.0, which fixes the issue
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:13 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/4dyg0gycrv55ox4oy… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Qpid Proton Dotnet |
Affected:
0 , ≤ 1.0.0
(semver)
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CVE-2026-67321 (GCVE-0-2026-67321)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 15:18
VLAI
EPSS
VEX
Title
axios 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 Denial of Service via maxDepth bypass
Summary
axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed to axios form or parameter serialization can trigger a RangeError from JSON.stringify, causing denial of service in the affected request path.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:18 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/axios/axios/security/advisorie… | vendor-advisory |
| https://www.vulncheck.com/advisories/axios-before… | third-party-advisory |
Impacted products
Date Public
2026-07-06 00:00
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CVE-2026-67215 (GCVE-0-2026-67215)
Vulnerability from cvelistv5 – Published: 2026-07-29 13:32 – Updated: 2026-07-29 15:59
VLAI
EPSS
VEX
Title
cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustion
Summary
cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 14:32 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://joshua.hu/cjson-json-parser-cve-vulnerabilities | exploit |
| https://github.com/DaveGamble/cJSON/blob/v1.7.19/… | technical-description |
| https://github.com/DaveGamble/cJSON/blob/v1.7.19/… | technical-description |
| https://www.vulncheck.com/advisories/cjson-json-p… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| DaveGamble | cJSON |
Affected:
0 , ≤ 1.7.19
(semver)
cpe:2.3:a:davegamble:cjson:*:*:*:*:*:*:*:* |
Date Public
2026-07-25 00:00
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Mitigation
Implementation
Ensure that an end condition will be reached under all logic conditions. The end condition may include checking against the depth of recursion and exiting with an error if the recursion goes too deep. The complexity of the end condition contributes to the effectiveness of this action.
Mitigation
Implementation
Increase the stack size.
CAPEC-230: Serialized Data with Nested Payloads
Applications often need to transform data in and out of a data format (e.g., XML and YAML) by using a parser. It may be possible for an adversary to inject data that may have an adverse effect on the parser when it is being processed. Many data format languages allow the definition of macro-like structures that can be used to simplify the creation of complex structures. By nesting these structures, causing the data to be repeatedly substituted, an adversary can cause the parser to consume more resources while processing, causing excessive memory consumption and CPU utilization.
CAPEC-231: Oversized Serialized Data Payloads
An adversary injects oversized serialized data payloads into a parser during data processing to produce adverse effects upon the parser such as exhausting system resources and arbitrary code execution.