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.
681 vulnerabilities reference this CWE, most recent first.
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
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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)
|
Date Public
2026-07-25 00:00
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CVE-2026-67194 (GCVE-0-2026-67194)
Vulnerability from cvelistv5 – Published: 2026-07-29 16:39 – Updated: 2026-07-29 18:07 X_Open Source
VLAI
EPSS
VEX
Title
Courier IMAP < 6.0.1 Mail Server < 2.0.2 Stack Overflow DoS via Nested SEARCH Queries
Summary
Courier IMAP before 6.0.1 and Courier Mail Server before 2.0.2 allow authenticated IMAP users to crash the imapd process via deeply nested parenthesized SEARCH queries. The SEARCH command parser (alloc_search_key in searchinfo.C) recursively descends on nested parenthesized groups through a mutual recursion chain with alloc_search_andlist() and alloc_search_notkey(), with no depth limit. Courier IMAP has no overall command line length limit, making exploitation trivial. A single IMAP command with ~2500 nested parentheses overflows the 8MB default stack, causing SIGSEGV.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:07 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/svarshavchik/courier/releases/… | release-notes |
| https://github.com/svarshavchik/courier/releases/… | release-notes |
| https://github.com/svarshavchik/courier-libs/comm… | patch |
| https://packages.debian.org/sid/courier-imap | product |
| https://www.vulncheck.com/advisories/courier-imap… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| svarshavchik | Courier IMAP |
Affected:
0 , < 6.0.1
(semver)
|
|
| svarshavchik | Courier Mail Server |
Affected:
0 , < 2.0.2
(semver)
|
Date Public
2026-07-29 00:00
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CVE-2026-66920 (GCVE-0-2026-66920)
Vulnerability from cvelistv5 – Published: 2026-07-28 12:57 – Updated: 2026-07-28 19:26
VLAI
EPSS
VEX
Title
Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data
Summary
Pivotick contains an uncontrolled-recursion vulnerability when processing caller-supplied graph and node data. The affected graph algorithms recursively traversed graph edges, while the JSON viewer recursively processed each level of a node’s data structure. A specially crafted graph containing an excessively long path, deeply nested properties, or circular object references could therefore exhaust the JavaScript call stack when Pivotick calculates a layout or displays a node in the inspection modal.
Successful exploitation may cause an uncaught exception, freeze the affected page, or crash the browser tab, resulting in a client-side denial of service. No confidentiality or integrity impact has been identified.
The patch replaces the recursive graph traversals with iterative stack-based implementations and limits the reachability calculation to 1,000,000 edge traversals. It also limits JSON rendering to 64 levels and detects circular references before descending further into an object.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 19:26 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Pivotick/Pivotick/commit/66373… | patch |
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CVE-2026-66274 (GCVE-0-2026-66274)
Vulnerability from cvelistv5 – Published: 2026-08-05 05:29 – Updated: 2026-08-06 15:37
VLAI
EPSS
VEX
Title
Apache Qpid Proton-J: 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-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, 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 15:07 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/h7xolzws2by2qhdjf… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Qpid Proton-J |
Affected:
0 , ≤ 0.34.1
(semver)
|
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CVE-2026-64194 (GCVE-0-2026-64194)
Vulnerability from cvelistv5 – Published: 2026-07-20 17:55 – Updated: 2026-07-21 18:56
VLAI
EPSS
VEX
Title
Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains
Summary
Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains.
Net::DNS::DomainName::decode follows RFC 1035 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which saturates the call stack (at least with larger TCP responses), leading to a potential Denial of Service.
The guard `$link < $offset` prevents forward and circular chains, but still allows arbitrarily long backward chains. The per-offset cache (`$cache`) is populated at the start of each call and short-circuits only re-traverses of the same offset - the initial descent through a fresh chain still recurses at full depth.
A crafted packet can chain two-byte compression pointers so that each one points two bytes earlier than the previous, producing a chain length of `offset / 2`. For the 14-bit pointer field (max offset 16383) this gives up to ~8191 recursive frames. For a TCP DNS message the limit is the 16-bit length field (~32767 frames). Perl's default C stack handles only a few thousand frames; beyond that the process receives SIGSEGV or similar, which is a denial-of-service for any application parsing untrusted DNS data.
The vulnerability is triggered by `Net::DNS::Packet->new(\$wire)` i.e. any point where the library decodes a DNS message from the network.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 18:55 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
4 references
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CVE-2026-63760 (GCVE-0-2026-63760)
Vulnerability from cvelistv5 – Published: 2026-07-20 12:04 – Updated: 2026-07-28 01:05
VLAI
EPSS
VEX
Title
SurrealDB before 3.1.0 Denial of Service via JSON Parser
Summary
SurrealDB before 3.1.0 fails to enforce the configured recursion depth limit in the value and JSON parser when processing nested braces, brackets, or parentheses. Unauthenticated attackers can send deeply nested JSON payloads to the WebSocket /rpc endpoint to exhaust server memory and crash the process.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 12:51 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/surrealdb/surrealdb/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/surrealdb-be… | third-party-advisory |
Impacted products
Date Public
2026-05-27 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.