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CVE-2026-33033

Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Djangoproject
Products
Django
CVE-2026-31932

Suricata krb5: quadratic complexity in krb5 buffering

Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, inefficiency in KRB5 buffering can lead to performance degradation. This issue has been patched in versions 7.0.15 and 8.0.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-31933

Suricata stream: quadratic complexity in stream inspection

Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-31934

Suricata smtp/mine: quadratic complexity in extracting urls

Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, there is a quadratic complexity issue when searching for URLs in mime encoded messages over SMTP leading to a performance impact. This issue has been patched in version 8.0.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-31937

Suricata dcerpc: quadratic complexity in dcerpc buffering

Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has been patched in version 7.0.15.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-34573

Parse Server: GraphQL complexity validator exponential fragment traversal DoS

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.68 and 9.7.0-alpha.12, the GraphQL query complexity validator can be exploited to cause a denial-of-service by sending a crafted query with binary fan-out fragment spreads. A single unauthenticated request can block the Node.js event loop for seconds, denying service to all concurrent users. This only affects deployments that have enabled the requestComplexity.graphQLDepth or requestComplexity.graphQLFields configuration options. This issue has been patched in versions 8.6.68 and 9.7.0-alpha.12.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Parse Community Parseplatform
Products
Parse Server Parse-server
CVE-2026-3988

Inefficient Algorithmic Complexity in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Gitlab
Products
Gitlab
CVE-2025-12084

Quadratic complexity in node ID cache clearing

When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Python
Products
Cpython Python
CVE-2025-14550

Potential denial-of-service vulnerability via repeated headers when using ASGI

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. `ASGIRequest` allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Jiyong Yang for reporting this issue.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Djangoproject
Products
Django
CVE-2025-58187

Quadratic complexity when checking name constraints in crypto/x509

Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Golang
Products
Crypto Go
CVE-2025-14822

DoS from quadratic complexity in model.ParseHashtags

Mattermost versions 10.11.x <= 10.11.8 fail to validate input size before processing hashtags which allows an authenticated attacker to exhaust CPU resources via a single HTTP request containing a post with thousands space-separated tokens

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Vendors
Mattermost
Products
Mattermost Mattermost Server
CVE-2025-11230

Denial of service vulnerability in HAProxy mjson library

Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Haproxy
Products
Aloha Appliance Haproxy Haproxy Enterprise and 1 more
CVE-2025-64460

Potential denial-of-service vulnerability in XML serializer text extraction

An issue was discovered in 5.2 before 5.2.9, 5.1 before 5.1.15, and 4.2 before 4.2.27. Algorithmic complexity in `django.core.serializers.xml_serializer.getInnerText()` allows a remote attacker to cause a potential denial-of-service attack triggering CPU and memory exhaustion via specially crafted XML input processed by the XML `Deserializer`. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.

CVSS 3.1 · 7.5 High EPSS 2.2% KEV · Not listed
Vendors
Djangoproject
Products
Django
CVE-2024-23684

upokecenter CBOR Denial of Service

Inefficient algorithmic complexity in DecodeFromBytes function in com.upokecenter.cbor Java implementation of Concise Binary Object Representation (CBOR) versions 4.0.0 to 4.5.1 allows an attacker to cause a denial of service by passing a maliciously crafted input. Depending on an application's use of this library, this may be a remote attacker.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Peteroupc
Products
Cbor
CVE-2024-21909

Denial of service in CBOR library

PeterO.Cbor versions 4.0.0 through 4.5.0 are vulnerable to a denial of service vulnerability. An attacker may trigger the denial of service condition by providing crafted data to the DecodeFromBytes or other decoding mechanisms in PeterO.Cbor. Depending on the usage of the library, an unauthenticated and remote attacker may be able to cause the denial of service condition.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Peteroupc
Products
Cbor
CVE-2025-64458

Potential denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows

An issue was discovered in 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8. NFKC normalization in Python is slow on Windows. As a consequence, `django.http.HttpResponseRedirect`, `django.http.HttpResponsePermanentRedirect`, and the shortcut `django.shortcuts.redirect` were subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.

CVSS 3.1 · 7.5 High EPSS 1.9% KEV · Not listed
Vendors
Djangoproject Microsoft
Products
Django Windows
CVE-2024-39702

OpenResty: Hashing function allows HashDoS (Hash Denial of Service) attacks

In lj_str_hash.c in OpenResty 1.19.3.1 through 1.25.3.1, the string hashing function (used during string interning) allows HashDoS (Hash Denial of Service) attacks. An attacker could cause excessive resource usage during proxy operations via crafted requests, potentially leading to a denial of service with relatively few incoming requests. This vulnerability only exists in the OpenResty fork in the openresty/luajit2 GitHub repository. The LuaJIT/LuaJIT repository. is unaffected.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Openresty
Products
Openresty
CVE-2025-55304

Exiv2 has quadratic performance in ICC profile parsing in JpegBase::readMetadata

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A denial-of-service was found in Exiv2 version 0.28.5: a quadratic algorithm in the ICC profile parsing code in jpegBase::readMetadata() can cause Exiv2 to run for a long time. The denial-of-service is triggered when Exiv2 is used to read the metadata of a crafted jpg image file. The bug is fixed in version 0.28.6.

CVSS 4.0 · 1.8 Low EPSS < 1% KEV · Not listed
Vendors
Exiv2
Products
Exiv2
CVE-2020-27223

jetty: request containing multiple Accept headers with a large number of "quality" parameters may lead to DoS

In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

CVSS 3.1 · 5.2 Medium EPSS 78.0% KEV · Not listed
Vendors
Apache Debian Eclipse and 3 more
Products
Nifi Solr Spark and 19 more
CVE-2024-9631

Inefficient Algorithmic Complexity in GitLab

An issue was discovered in GitLab CE/EE affecting all versions starting from 13.6 prior to 17.2.9, starting from 17.3 prior to 17.3.5, and starting from 17.4 prior to 17.4.2, where viewing diffs of MR with conflicts can be slow.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Gitlab
Products
Gitlab