PYSEC-2026-1879 Ryu Infinite Loop vulnerability

OFPGroupDescStats in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via OFPBucket.len=0...

Ryu Infinite Loop vulnerability

OFPHello in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via length=0...

PYSEC-2026-1883 Ryu Infinite Loop vulnerability

OFPFlowStats in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via inst.length=0...

PYSEC-2026-1880 Ryu Infinite Loop vulnerability

OFPBucket in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via action.len=0...

PYSEC-2026-1877 Ryu Infinite Loop vulnerability

OFPHello in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via length=0...

PYSEC-2026-1882 Ryu Infinite Loop vulnerability

OFPPacketQueue in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service infinite loop via OFPQueueProp.len=0...

aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

SummaryAn attacker can send a specially crafted POST multipart/form-data request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. ImpactAn attacker can stop the application from serving requests after sending a single...

PYSEC-2026-1098 aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

Summary An attacker can send a specially crafted POST multipart/form-data request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. Impact An attacker can stop the application from serving requests after sending a single...

Ryu Infinite Loop vulnerability

An issue was discovered in OFPMatch in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service DoS infinite loop...

PYSEC-2026-1884 Ryu Infinite Loop vulnerability

An issue was discovered in OFPMatch in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service DoS infinite loop...

Denial of service via regular expression

ImpactAll historical installations of django-wiki are vulnerable to maliciously crafted article content, that can cause severe use of server CPU through a regular expression loop. Patches WorkaroundsClose off access to create and edit articles by anonymous users. ReferencesAre there any links use...

PYSEC-2026-1834 Possible Infinite Loop when PdfWriter(clone_from) is used with a PDF

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case when the pypdf-user manipulates an incomi...

Possible Infinite Loop when PdfWriter(clone_from) is used with a PDF

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to an infinite loop.This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage.That is, for example, the case when the pypdf-user manipulates an incoming...

Excessive Iteration in gRPC

gRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional cases/Three vectors were found that allow the following DOS attacks:- Unbounded memory buffering in the HPACK parser- Unbounded CPU consumption in...

PYSEC-2026-1876 FaucetSDN Ryu Denial of Service Vulnerability

An issue was discovered in OFPBundleCtrlMsg in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service DoS infinite loop...

FaucetSDN Ryu Denial of Service Vulnerability

An issue was discovered in OFPQueueGetConfigReply in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service DoS infinite loop...

PYSEC-2026-1878 FaucetSDN Ryu Denial of Service Vulnerability

An issue was discovered in OFPQueueGetConfigReply in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service DoS infinite loop...

PYSEC-2026-1835 pypdf and PyPDF2 possible Infinite Loop when a comment isn't followed by a character

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if parsecontentstream is executed. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the...

pypdf and PyPDF2 possible Infinite Loop when a comment isn't followed by a character

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if parsecontentstream is executed. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the...

PYSEC-2026-1836 PyPDF2 vulnerable to possible Infinite Loop when reading malformed objects

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the user extracted metadata from such ...