CVE-2026-47180: Uncontrolled Recursion

Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.5, DNSIncoming.decodelabelsatoffset recurses once per DNS-name compression pointer, and a single mDNS packet carrying chained pointers can trigger a RecursionError that escapes DNSIncoming.init, causing...

CVE-2026-59927 Mistune directives/include: mutual `.. include::` recursion crashes the renderer with `RecursionError`, denial of service via two attacker-controlled markdown files

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise...

CVE-2026-59927: Uncontrolled Recursion

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise...

PYSEC-2026-1805 protobuf affected by a JSON recursion depth bypass

A denial-of-service DoS vulnerability exists in google.protobuf.jsonformat.ParseDict in Python, where the maxrecursiondepth limit can be bypassed when parsing nested google.protobuf.Any messages. Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can...

OESA-2026-2765 python-pyasn1 security update

Abstract Syntax Notation One ASN.1 is a technology for exchanging structured data in a universally understood, hardware agnostic way. Many industrial, security and telephony applications heavily rely on ASN.1. The pyasn1 library implements ASN.1 support in pure-Python. Security Fixes: The pyasn1...

OESA-2026-2764 python-pyasn1 security update

Abstract Syntax Notation One ASN.1 is a technology for exchanging structured data in a universally understood, hardware agnostic way. Many industrial, security and telephony applications heavily rely on ASN.1. The pyasn1 library implements ASN.1 support in pure-Python. Security Fixes: The pyasn1...

EulerOS 2.0 SP11 : protobuf (EulerOS-SA-2026-2223)

According to the versions of the protobuf packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A denial-of-service DoS vulnerability exists in google.protobuf.jsonformat.ParseDict in Python, where the maxrecursiondepth limit can be bypasse...

EulerOS Virtualization 2.12.1 : protobuf (EulerOS-SA-2026-2084)

According to the versions of the protobuf packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A denial-of-service DoS vulnerability exists in google.protobuf.jsonformat.ParseDict in Python, where the maxrecursiondepth limit...

CVE-2026-44844: Uncontrolled Recursion

emlparser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to 3.0.1, EmlParser.getrawbodytext recurses unconditionally for every nested message/rfc822 attachment without any depth limit. An attacker who ca...

AZL-80541 CVE-2026-26209 affecting package python-cbor2 5.6.5-2

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

CVE-2026-26209: Uncontrolled Recursion

cbor2 provides encoding and decoding for the Concise Binary Object Representation CBOR serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the...

AZL-80238 CVE-2026-30922 affecting package python-pyasn1 for versions less than 0.4.8-2

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the pyasn1 library is vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested SEQUENC...

CVE-2026-0994: Uncontrolled Recursion

A denial-of-service DoS vulnerability exists in google.protobuf.jsonformat.ParseDict in Python, where the maxrecursiondepth limit can be bypassed when parsing nested google.protobuf.Any messages. Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can...

CBL Mariner 2.0 Security Update: protobuf (CVE-2025-4565)

The version of protobuf installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-4565 advisory. - Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an...

SUSE SLES15 Security Update : protobuf (SUSE-SU-2025:02310-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2025:02310-1 advisory. - CVE-2025-4565: Fix parsing of untrusted Protocol Buffers data containing an arbitrary number of recursive groups or messages that can lea...

LlamaIndex vulnerable to DoS attack through uncontrolled recursive JSON parsing

The JSONReader in run-llama/llamaindex versions 0.12.28 is vulnerable to a stack overflow due to uncontrolled recursive JSON parsing. This vulnerability allows attackers to trigger a Denial of Service DoS by submitting deeply nested JSON structures, leading to a RecursionError and crashing...

CVE-2025-5472: Uncontrolled Recursion

The JSONReader in run-llama/llamaindex versions 0.12.28 is vulnerable to a stack overflow due to uncontrolled recursive JSON parsing. This vulnerability allows attackers to trigger a Denial of Service DoS by submitting deeply nested JSON structures, leading to a RecursionError and crashing...

Denial Of Service (DoS)

Protobuf is vulnerable to Denial Of Service DoS. The vulnerability is due to improper handling of deeply nested or recursive structures in the Pure-Python backend, leading to a RecursionError...

CVE-2025-4565 Unbounded recursion in Python Protobuf

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashin...

CVE-2025-4565

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashin...