Common Weakness Enumeration

CWE-674

Allowed-with-Review

Uncontrolled 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.

663 vulnerabilities reference this CWE, most recent first.

CVE-2026-67321 (GCVE-0-2026-67321)

Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 15:18
VLAI
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.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
axios axios Affected: 0.31.1 , < 0.33.0 (semver)
Unaffected: 0.33.0 (semver)
Create a notification for this product.
axios axios Affected: 1.15.1 , < 1.18.0 (semver)
Unaffected: 1.18.0 (semver)
Create a notification for this product.
Date Public
2026-07-06 00:00
Credits
fg0x0
Show details on NVD website

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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
Title
cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustion
Summary
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SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
DaveGamble cJSON Affected: 0 , ≤ 1.7.19 (semver)
Create a notification for this product.
Date Public
2026-07-25 00:00
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Date Public
2026-07-29 00:00
Credits
Tristan Madani
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-674 - Uncontrolled Recursion
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Pivotick Pivotick Affected: 0 , ≤ 1.4.0 (semver)
Create a notification for this product.
Credits
Jeroen Pinoy Sami Mokaddem
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
NLNETLABS Net::DNS Affected: 0 , ≤ 1.55 (custom)
Create a notification for this product.
Credits
Steffen Ullrich
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
surrealdb surrealdb Affected: 0 , < 3.1.0 (semver)
Unaffected: 3.1.0 (semver)
Create a notification for this product.
Date Public
2026-05-27 00:00
Credits
DarkaMaul
Show details on NVD website

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CVE-2026-63759 (GCVE-0-2026-63759)

Vulnerability from cvelistv5 – Published: 2026-07-20 12:04 – Updated: 2026-07-28 01:05
VLAI
Title
SurrealDB before 3.1.0 Denial of Service nested type annotations
Summary
SurrealDB before 3.1.0 fails to enforce recursion depth limits in the type/kind parser when processing nested type annotations. Authenticated attackers can send queries with deeply nested type annotations to exhaust server memory and crash the process.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
surrealdb surrealdb Affected: 0 , < 3.1.0 (semver)
Unaffected: 3.1.0 (semver)
Create a notification for this product.
Date Public
2026-05-27 00:00
Credits
DarkaMaul
Show details on NVD website

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CVE-2026-63737 (GCVE-0-2026-63737)

Vulnerability from cvelistv5 – Published: 2026-07-20 12:04 – Updated: 2026-07-28 01:05
VLAI
Title
SurrealDB before 3.1.5 Denial of Service via deep operator chains
Summary
SurrealDB versions before 3.1.5 contain a denial of service vulnerability where authenticated users can crash the server with queries containing long chains of operators. Attackers can submit queries with tens of thousands of chained operators that create unbounded expression trees, causing stack overflow during query processing and aborting the entire process.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
surrealdb surrealdb Affected: 3.0.0 , < 3.1.5 (semver)
Unaffected: 3.1.5 (semver)
Create a notification for this product.
Date Public
2026-06-19 00:00
Show details on NVD website

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CVE-2026-63144 (GCVE-0-2026-63144)

Vulnerability from cvelistv5 – Published: 2026-07-21 22:26 – Updated: 2026-07-22 13:27
VLAI
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
Elastic Elasticsearch Affected: 9.4.0 , ≤ 9.4.3 (semver)
Affected: 9.3.0 , ≤ 9.3.7 (semver)
Affected: 8.19.0 , ≤ 8.19.18 (semver)
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
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SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-674 - Uncontrolled Recursion
  • CWE-755 - Improper Handling of Exceptional Conditions
Assigner
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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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.