Common Weakness Enumeration
CWE-834
DiscouragedExcessive Iteration
Abstraction: Class · Status: Incomplete
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.
148 vulnerabilities reference this CWE, most recent first.
CVE-2026-110596 (GCVE-0-2026-110596)
Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 14:16
VLAI
EPSS
VEX
Title
quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search
Summary
quirc through 1.2 contains an excessive-iteration vulnerability in find_alignment_pattern() in lib/identify.c that allows attackers to hang quirc_end() with a crafted image. Attackers can arrange three finder patterns producing a near-degenerate perspective transform, causing billions of region_code() iterations that exhaust CPU in applications decoding attacker-supplied QR images.
Severity
5.5 (Medium)
CWE
- CWE-834 - Excessive Iteration
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/dlbeer/quirc/pull/159 | issue-trackingpatch |
| https://github.com/dlbeer/quirc/issues/162 | issue-tracking |
| https://hackmd.io/@haind-pwn/quirc-alignment-patt… | third-party-advisory |
| https://github.com/dlbeer/quirc/blob/542848dd6b9b… | technical-description |
| https://www.vulncheck.com/advisories/quirc-throug… | third-party-advisory |
Date Public
2026-08-07 00:00
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CVE-2026-106576 (GCVE-0-2026-106576)
Vulnerability from cvelistv5 – Published: 2026-10-07 15:37 – Updated: 2026-10-07 17:03
VLAI
EPSS
VEX
Title
ImageMagick: Denial of service possible when parsing an XMP profile.
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-31, a crafted XMP profile can trigger excessive work while the parser determines a rational value's numerator and denominator, causing denial of service. This issue is fixed in version 7.1.2-31.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 16:05 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | x_refsource_CONFIRM |
| https://github.com/ImageMagick/ImageMagick/commit… | x_refsource_MISC |
| https://github.com/ImageMagick/ImageMagick/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
< 7.1.2-31
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CVE-2026-91137 (GCVE-0-2026-91137)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:18 – Updated: 2026-10-02 10:44
VLAI
EPSS
VEX
Title
Apache Thrift: PHP `thrift_protocol` accelerator: zero-byte container elements
Summary
Improper validation of specified quantity in input, Allocation of resources without limits or throttling, Excessive Iteration vulnerability in Apache Thrift PHP bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 10:43 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/bf12g1b11r4x9x3ws… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
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CVE-2026-87721 (GCVE-0-2026-87721)
Vulnerability from cvelistv5 – Published: 2026-09-24 22:02 – Updated: 2026-09-25 16:49
VLAI
EPSS
VEX
Title
Denial of Service via Exponential Backtracking in ANTLR Search Query Parser in Gerrit Code Review
Summary
Uncontrolled Resource Consumption (CWE-400 / CWE-407) in the ANTLR 3 search query parser (QueryParser / Query.g) in Gerrit Code Review versions 2.0.19 through 3.12.9, 3.13.0 through 3.13.8, and 3.14.0 through 3.14.2 allows an unauthenticated remote attacker (or an authenticated user if anonymous read access is disabled) to cause a persistent denial of service (CPU exhaustion and HTTP worker thread pool starvation requiring a server restart) via crafted search queries containing deeply nested parentheses sent to query evaluation endpoints (/changes/?q=, /accounts/?q=, /groups/?query=, /projects/?query=, /Documentation/?q=, /changes/{id}/query?expression=, or SSH gerrit query). Because syntactic predicates in conditionOr and conditionAnd recurse via conditionBase without memoization prior to capability or visibility checks and worker threads do not abort when the client disconnects, a small number of requests (such as 25 requests matching default httpd.maxThreads) can permanently pin all HTTP worker threads. This issue is fixed in Gerrit Code Review versions 3.12.10, 3.13.9, and 3.14.3.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:45 UTC
CWE
Assigner
References
1 reference
Impacted products
Date Public
2026-09-22 00:00
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CVE-2026-84311 (GCVE-0-2026-84311)
Vulnerability from cvelistv5 – Published: 2026-09-01 20:03 – Updated: 2026-09-02 16:02
VLAI
EPSS
VEX
Title
pypdf: Possible long runtimes/large memory usage when extracting XForm objects
Summary
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 13:42 UTC
CWE
- CWE-834 - Excessive Iteration
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/py-pdf/pypdf/security/advisori… | x_refsource_CONFIRM |
| https://github.com/py-pdf/pypdf/pull/3966 | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/commit/d91ab705fd… | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/releases/tag/6.16.1 | x_refsource_MISC |
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CVE-2026-84310 (GCVE-0-2026-84310)
Vulnerability from cvelistv5 – Published: 2026-09-01 20:00 – Updated: 2026-09-04 02:07
VLAI
EPSS
VEX
Title
pypdf: Possible long runtimes/large memory usage when retrieving outlines
Summary
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_doc_common.py _get_outline to consume long runtimes and large amounts of memory when retrieving document outlines with large numbers of entries or deeply nested reused paths because the traversal lacked global entry-count and nesting-depth limits. This issue is fixed in version 6.16.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 02:07 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/py-pdf/pypdf/security/advisori… | x_refsource_CONFIRM |
| https://github.com/py-pdf/pypdf/pull/3966 | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/commit/d91ab705fd… | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/releases/tag/6.16.1 | x_refsource_MISC |
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CVE-2026-81880 (GCVE-0-2026-81880)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:09 – Updated: 2026-09-25 23:29
VLAI
EPSS
VEX
Title
radare2: Uncontrolled resource consumption in radare2 PEF loader
Summary
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 23:29 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/radareorg/radare2/security/adv… | x_refsource_CONFIRM |
| https://github.com/radareorg/radare2/commit/87c78… | x_refsource_MISC |
| https://github.com/radareorg/radare2/releases/tag/6.2.0 | x_refsource_MISC |
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CVE-2026-81872 (GCVE-0-2026-81872)
Vulnerability from cvelistv5 – Published: 2026-09-16 20:42 – Updated: 2026-09-17 13:36
VLAI
EPSS
VEX
Title
OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full
Summary
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 13:36 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-go |
Affected:
< 0.21.0
|
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CVE-2026-77399 (GCVE-0-2026-77399)
Vulnerability from cvelistv5 – Published: 2026-09-22 18:58 – Updated: 2026-09-23 14:36
VLAI
EPSS
VEX
Title
icalendar: Denial of service via unbounded VALARM REPEAT expansion
Summary
icalendar is an RFC 5545 compatible parser and generator of iCalendar files for Python. From 6.1.0 until 7.2.2, vInt.from_ical accepts an attacker-controlled VALARM REPEAT value and applications that request alarm times can eagerly expand it without an application-level limit. Alarms.times and Alarms.active reach the unbounded expansion in versions starting with 6.1.0, while Alarm.triggers adds a second affected path starting with 7.0.0. Parsing alone does not trigger the issue, but accessing these properties can consume excessive CPU time and heap memory and terminate or stall a service. This issue is fixed in version 7.2.2.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 14:10 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/collective/icalendar/security/… | x_refsource_CONFIRM |
| https://github.com/collective/icalendar/pull/1571 | x_refsource_MISC |
| https://github.com/collective/icalendar/commit/15… | x_refsource_MISC |
| https://github.com/collective/icalendar/commit/cd… | x_refsource_MISC |
| https://github.com/collective/icalendar/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| collective | icalendar |
Affected:
>= 6.1.0, < 7.2.2
|
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CVE-2026-77357 (GCVE-0-2026-77357)
Vulnerability from cvelistv5 – Published: 2026-08-25 20:40 – Updated: 2026-08-26 12:54
VLAI
EPSS
VEX
Title
Mesop: DoS in /hot-reload endpoint allows unauthenticated attacker to exhaust worker threads and crash the server
Summary
Mesop is a Python-based UI framework that allows users to build web applications. Prior to 1.3.3, applications running in debug mode expose a GET /hot-reload endpoint whose unbounded loop depends on the user-supplied counter parameter, allowing an unauthenticated attacker to hold worker threads with high counter values until the worker pool is exhausted and the server becomes unavailable. A single unauthenticated attacker can crash the Mesop server with minimal effort. Because the attack leverages worker exhaustion, the server remains unresponsive until it is manually restarted. This issue is fixed in version 1.3.3.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 12:53 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mesop-dev/mesop/security/advis… | x_refsource_CONFIRM |
| https://github.com/mesop-dev/mesop/commit/2b8e7f2… | x_refsource_MISC |
| https://github.com/mesop-dev/mesop/releases/tag/v1.3.3 | x_refsource_MISC |
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.