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CVE-2020-14422

python: DoS via inefficiency in IPv{4,6}Interface classes

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.

CVSS 3.1 · 5.9 Medium EPSS 12.7% KEV · Not listed
Vendors
Fedoraproject Opensuse Oracle and 2 more
Products
Fedora Leap Enterprise Manager Ops Center and 3 more
CVE-2020-8492

python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

CVSS 3.1 · 6.5 Medium EPSS 6.6% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 3 more
Products
Ubuntu Linux Debian Linux Fedora and 4 more
CVE-2020-10735

python: int() type in PyLong_FromString() does not limit amount of digits converting text to int leading to DoS

A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability.

CVSS 3.1 · 6.2 Medium EPSS 4.5% KEV · Not listed
Vendors
Fedoraproject Python Redhat
Products
Fedora Python Enterprise Linux and 4 more
CVE-2019-19906

cyrus-sasl: denial of service in _sasl_add_string function

cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.

CVSS 3.1 · 7.5 High EPSS 8.0% KEV · Not listed
Vendors
Apache Apple Canonical and 5 more
Products
Bookkeeper Ipados Iphone Os and 17 more
CVE-2019-6488

glibc: Incorrect attempt to use a 64-bit register for size_t in assembly codes results in segmentation fault

The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.

CVSS 3.0 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Gnu
Products
Glibc
CVE-2019-17498

libssh2: integer overflow in SSH_MSG_DISCONNECT logic in packet.c

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

CVSS 3.1 · 8.1 High EPSS 3.8% KEV · Not listed
Vendors
Debian Fedoraproject Libssh2 and 3 more
Products
Debian Linux Fedora Libssh2 and 10 more
CVE-2018-20843

expat: large number of colons in input makes parser consume high amount of resources, leading to DoS

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

CVSS 3.1 · 7.5 High EPSS 7.1% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 5 more
Products
Ubuntu Linux Debian Linux Fedora and 9 more
CVE-2018-19591

glibc: file descriptor leak in if_nametoindex() in sysdeps/unix/sysv/linux/if_index.c

In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.

CVSS 3.1 · 7.5 High EPSS 5.5% KEV · Not listed
Vendors
Fedoraproject Gnu
Products
Fedora Glibc
CVE-2018-14567

libxml2: Infinite loop caused by incorrect error detection during LZMA decompression

libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251.

CVSS 3.0 · 6.5 Medium EPSS 4.3% KEV · Not listed
Vendors
Canonical Debian Redhat and 1 more
Products
Ubuntu Linux Debian Linux Ansible Tower and 2 more
CVE-2017-18258

libxml2: Unrestricted memory usage in xz_head() function in xzlib.c

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

CVSS 3.0 · 6.5 Medium EPSS 2.7% KEV · Not listed
Vendors
Redhat Xmlsoft
Products
Ansible Tower Enterprise Linux Jboss Core Services and 1 more
CVE-2026-107839

ageLANServer: Unbounded JSON Array Allocation in AoE3 Cloud `getFileURL` Endpoint Leads to Remote Denial of Service

ageLANServer provides a cross-platform web server and launcher for offline multiplayer in several Age of Empires and Age of Mythology games. Prior to version 1.15.2, the AoE3 POST /game/cloud/getFileURL handler in the bundled game server has no request body size limit or cap on the attacker-controlled JSON names array and allocates response storage directly from the unbounded array length. A remote unauthenticated client can use the default self-registration flow and send an oversized request that causes excessive memory allocation, crashes or hangs the server process, disconnects active players, and keeps the service unavailable until it is restarted. This issue is fixed in version 1.15.2.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Luskaner
Products
Agelanserver
CVE-2026-48484

pyLoad: Lack of Input Size Validation Leads to Denial of Service (DoS) and Process Termination

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, the API `rpc` function in `api_blueprint.py` handles `multipart/form-data` uploads by reading the whole content of the uploaded file into memory with `file.read()`. This occurs before the data is sent to the underlying function. Since there is no size limit set at this point, a large file upload can exhaust the server's available memory which led to process termination. Version 0.5.0b3.dev101 contains a patch.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Pyload
Products
Pyload
CVE-2026-107287

Pydantic AI: Excessive resource use when local web fetching converts nested HTML

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.7 and 2.52.0, the local web_fetch_tool and the WebFetch local fallback can consume excessive CPU and memory during HTML-to-Markdown conversion of attacker-controlled HTML containing deeply nested block elements. Conversion repeatedly reprocesses accumulated text and can greatly expand intermediate output before the returned-content limit is applied, allowing a model-directed fetch to delay other work in the process. Provider-native web fetching is not affected. This issue is fixed in versions 1.107.7 and 2.52.0.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Pydantic
Products
Pydantic-ai Pydantic Ai
CVE-2026-109768

Denial-of-service in the Site Reports component

Denial-of-service in the Site Reports component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox
CVE-2026-107834

OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the multipart loop in internal/bodyprocessors/multipart.go executes defer temp.Close() for every uploaded file part, so each temporary-file descriptor remains open until the complete request returns. An unauthenticated attacker can submit a multipart body containing many minimal file parts and exhaust the process file-descriptor table within the request-body size limit, causing os.CreateTemp failures, MULTIPART_STRICT_ERROR responses, blocked legitimate uploads, and process-wide inability to open files or sockets. This issue is fixed in version 3.8.0.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Coraza
Products
Coraza
CVE-2026-109773

Denial-of-service in the Sync component

Denial-of-service in the Sync component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mozilla
Products
Firefox