Weakness (CWE)
CWE-606: Unchecked Input for Loop Condition
The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.
How to prevent it (2 mitigations)
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Implementation
Do not use user-controlled data for loop conditions.
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Implementation
Perform input validation.
Source: MITRE CWE-606
51 results · Feed
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Medium 5.5
FFmpeg through 9.0.2 CPU Exhaustion via JPEG XL Parser TOC Count
FFmpeg through 9.0.2 contains an uncontrolled resource consumption vulnerability in parse_frame_header() in libavcodec/jpegxl_parser.c that fails to validate TOC entry counts against remaining input. Attackers can supply a crafted JPEG XL frame header with a …
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High 7.5
Uncontrolled Resource Consumption in Telerik Document Processing Libraries RadSpreadProcessing and RadSpreadStreamProcessing
In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, uncontrolled recursion, infinite loop, unchecked loop condition and inefficient regular expression vulnerabilities in RadSpreadProcessing and RadSpreadStreamProcessing allow an …
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High 7.5
Unchecked Input for Loop Condition in hMailServer
Unchecked input for a loop condition in Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to stop the server carrying mail. The server bounds the mail it generates in response to a message - a rule forward, reply or co…
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Medium 4.7
Unchecked Input for Loop Condition in Wireshark
Microsoft Network Monitor file parser large loop in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
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High 7.1
Temporal Server Schedule exclusion search can cause excessive CPU consumption
Temporal Server did not bound the work performed while searching for a Schedule's next action time. An authenticated caller with namespace write permission could create or update a Schedule that combines a fine-grained cadence with an exclusion calendar that …
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Medium 5.5
Poppler: poppler: unbounded cpu loop in splashoutputdev::tilingpatternfill via unvalidated tiling-pattern repeat count (denial of service)
A denial of service flaw was found in Poppler's Splash backend. A crafted PDF with tiling-pattern geometry approaching the int32 boundary can cause SplashOutputDev::tilingPatternFill to compute an attacker-controlled repeat count that drives an excessively lo…
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High 8.2
smol-toml: Denial of Service via malformed TOML documents
smol-toml is a small, fast, and correct TOML parser and serializer. Prior to 1.7.1, parse() can enter an infinite loop when a value inside an array or inline table is followed by a comment with no trailing newline. In src/util.ts, skipUntil() calls indexOfNew…
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High 8.8
Pega Platform versions 7.1.0 through 25.1.2 are affected by an improper validation of inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.
Pega Platform versions 7.1.0 through 25.1.2 are affected by an improper validation of inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.
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Medium 5.1
Denial of Service in GNU wget
GNU wget is vulnerable to denial of service in its FTP OPIE/S-KEY authentication functionality. The server-supplied sequence number from the FTP challenge line is used as an iteration count for an MD5 key-derivation loop without any upper bound validation. A …
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High 7.5
.NET Denial of Service Vulnerability
Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
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Medium 5.3
Mermaid radar diagrams are vulnerable to DoS
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze t…
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High 8.6
Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability
A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol, of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition …
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Medium 6.5
Apache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of service
An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service. This issue affects Apache Qpid Proton-Dotnet: through 1.0.0. Users are recommended to u…
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Medium 6.5
Apache Qpid Broker-J: Unbounded disposition range handling can lead to denial of service
An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgra…
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Medium 6.5
Apache Qpid Proton-J: Unbounded disposition range handling can lead to denial of service
An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service. This issue affects Apache Qpid Proton-J: through 0.34.1. Users are recommended to upgra…
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Medium 6.6
Loytec LINX firmware: Unchecked input for loop condition in the SNMP agent
Unchecked input for loop condition (CWE-606) in the SNMP agent in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an unauthenticated remote attacker to cause persistent denial of service (CPU exhaustio…
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Medium 6.5
Junos OS: MX Series: In a VC scenario a high rate of micro-BFD session flaps will cause an FPC crash
An Unchecked Input for Loop Condition vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).Micro-BFD session flaps generate respective up/…
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Medium 5.5
Unchecked Input for Loop Condition in Wireshark
FMP/NOTIFY protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
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High 8.2
tarfile opened in streaming mode mishandles EOF
When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
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High 7.5
kafka-python prior to 2.3.2 DoS via SCRAM Iteration Count in scram.py
kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a malicious or machine-in-the-middle broker to freeze the client event loop by supplying an excessively large iteration count. In scram.py, Scr…
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Low 2.4
Logic bypass vulnerability in the file system. Impact: Successful exploitation of this vulnerability may affect availab…
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Medium 6.5CVE-2026-27145 Public exploit
Inefficient candidate hostname parsing in crypto/x509
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification c…
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Medium 5.3CVE-2026-5950 Public exploit
Unbounded resend loop in BIND 9 resolver
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue…
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High 7.5
Python-Multipart: Denial of Service via unbounded multipart part headers
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of p…
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Medium 4.9
Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet
A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.
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High 7.5
protobufjs: Denial of service through unbounded protobuf recursion
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs could recurse without a depth limit while decoding nested protobuf data. This affected both skipping unknown group fields and generated decoding of n…
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High 7.5
Quadratic string concatentation in consumeComment in net/mail
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
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High 7.5
Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
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Medium 5.3
Apache Thrift: c_glib dispatch stack overflow
Uncontrolled Recursion vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.
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High 7.5
Forge has Denial of Service via Infinite Loop in BigInteger.modInverse() with Zero Input
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, a Denial of Service (DoS) vulnerability exists in the node-forge library due to an infinite loop in the BigInteger.modInverse() func…
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High 7.5
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make re…
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Medium 6.2
Liquid Studio 2.17 Denial of Service via Malformed Input
Liquid Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters during app…
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High 7.7
Denial of service (DOS) in SAP Supply Chain Management
Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. T…
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High 7.7
Denial of service (DOS) in SAP Supply Chain Management
Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. T…
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High 7.5CVE-2025-65518 Public exploit
Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS) condition. The vulnerability …
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Medium 6.9
Liferay Portal has unchecked input for loop condition vulnerability in XML-RPC
Unchecked input for loop condition vulnerability in XML-RPC in Liferay Portal 7.4.0 through 7.4.3.111, and older unsupported versions, and Liferay DXP 2023.Q4.0, 2023.Q3.1 through 2023.Q3.4, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupp…
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Medium 6.5
Denial of Service (DoS) vulnerability in SAP Business Planning and Consolidation
SAP Business Planning and Consolidation allows an authenticated standard user to call a function module by crafting specific parameters that causes a loop, consuming excessive resources and resulting in system unavailability. This leads to high impact on the …
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High 7.2
Authenticated Relative Path Traversal
Relative Path Traversal vulnerabilities in ASPECT allow access to file resources if session administrator credentials become compromised. This issue affects ASPECT-Enterprise: through 3.08.03; NEXUS Series: through 3.08.03; MATRIX Series: through 3.08.03.
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Medium 4.9
Authenticated Unchecked Loop Condition
An Unchecked Loop Condition in ASPECT provides an attacker the ability to maliciously consume system resources if session administrator credentials become compromised This issue affects ASPECT-Enterprise: through 3.08.03; NEXUS Series: through 3.08.03; MATRIX…
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Medium 5.3
An Unchecked Input for Loop Condition in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to cause IO devices …