PYSEC-2026-2187

Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the Origin header validation uses Python's re.match to check incoming origins against the alloworiginpat configuration value. Because re.match only anchors at the start of the string and does not require a...

PYSEC-2026-69

Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the secret used to sign authentication cookies is persisted to a static file at /.local/share/jupyter/runtime/jupytercookiesecret and is never rotated when a user changes their password. After a password...

PYSEC-2026-68

Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, a path traversal vulnerability in the REST API allows an authenticated user to escape the configured rootdir and access sibling directories whose names begin with the same prefix as the rootdir. For exampl...

PYSEC-2026-119

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admi...

PYSEC-2026-55

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.django.middleware.cache.UpdateCacheMiddleware erroneously caches requests where the Vary header contained an asterisk ''. This can lead to private data being stored and served.Earlier, unsupported Django series such as 5.0.x, 4.1.x...

PYSEC-2026-54

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.ASGI requests with a missing or understated Content-Length header can bypass the FILEUPLOADMAXMEMORYSIZE limit, potentially loading large files into memory and causing service degradation. As a reminder, Django expects a limit to b...

PYSEC-2026-50

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.Response headers do not vary on cookies if a session is not modified, but SESSIONSAVEEVERYREQUEST is True. A remote attacker can steal a user's session after that user visits a cached public page.Earlier, unsupported Django series...

PYSEC-2026-67

Jupyter Server is the backend for Jupyter web applications. In jupyterserver versions through 2.17.0, the next query parameter in the login flow is insufficiently validated in LoginFormHandler.redirectsafe, which allows redirects to arbitrary external domains via values such as ///example.com. An...

PYSEC-2026-2245

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0-rc3, the Script Runner widget allows users to execute Python and Ruby scripts directly from the openc3-COSMOS-script-runner-api container. Because all the...

PYSEC-2026-105

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0, the Command Sender UI uses an unsafe eval function on array-like command parameters, which allows a user-supplied payload to execute in the browser when...

PYSEC-2026-2243

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, OpenC3 COSMOS contains a design flaw in the savetoolconfig function that allows saving tool configuration files at arbitrary locations...

PYSEC-2026-2242

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid...

PYSEC-2026-2244

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From version 6.7.0 to before version 7.0.0-rc3, a SQL injection vulnerability exists in the Time-Series Database TSDB component of COSMOS. The tsdblookup function in the...

PYSEC-2026-602

An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied projectid for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credentia...

PYSEC-2026-205

An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0. Ironic Python Agent IPA sometimes executes grub-install from within a chroot of the deployed partition image, leading to code execution in the case of a malicious image...

PYSEC-2026-2132

Pallets Click, versions 8.3.2 and below, contain a command injection vulnerability in the click.edit function, allowing attackers to pass arbitrary OS commands from an unprivileged account...

PYSEC-2026-24

Apache Airflow's SMTP provider SmtpHook called Python's smtplib.SMTP.starttls without an SSL context, so no certificate validation was performed on the TLS upgrade. A man-in-the-middle between the Airflow worker and the SMTP server could present a self-signed certificate, complete the STARTTLS...

PYSEC-2026-100

NVIDIA NVFlare Dashboard contains a vulnerability in the user management and authentication system where an unauthenticated attacker may cause authorization bypass through user-controlled key. A successful exploit of this vulnerability may lead to privilege escalation, data tampering, information...

PYSEC-2026-2306

A vulnerability was found in vllm up to 0.19.0. The affected element is the function hasmambalayers of the file vllm/v1/kvcacheinterface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is...

PYSEC-2026-76

LangChain is a framework for building agents and LLM-powered applications. Prior to 1.1.14, langchain-openai's urltosize helper used by getnumtokensfrommessages for image token counting validated URLs for SSRF protection and then fetched them in a separate network operation with independent DNS...

PYSEC-2026-77

LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-splitters 1.1.2, HTMLHeaderTextSplitter.splittextfromurl validated the initial URL using validatesafeurl but then performed the fetch with requests.get with redirects enabled the default. Because...

PYSEC-2026-109

pretalx is a conference planning tool. Prior to 2026.1.0, an unauthenticated attacker can send arbitrary HTML-rendered emails from a pretalx instance's configured sender address by embedding malformed HTML or markdown link syntax in a user-controlled template placeholder such as the account displ...

PYSEC-2026-25

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF protection on the cache feature in authlib.integrations.starletteclient.OAuth. This vulnerability is fixed in 1.6.11...

PYSEC-2026-87

lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration with resolveentities=True allows untrusted XML input to read local files. Setting the resolveentities option explicitly to resolveentities='internal' ...

PYSEC-2026-108

pretalx is a conference planning tool. Prior to 2026.1.0, The organiser search in the pretalx backend rendered submission titles, speaker display names, and user names/emails into the result dropdown using innerHTML string interpolation. Any user who controls one of those fields which includes an...

PYSEC-2026-88

Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.gettemplate is vulnerable to path traversal when a URI starts with // e.g., //../../../secret.txt. The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be...

PYSEC-2026-2180

A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in H2O-3 version 3.46.0.9 and prior. The vulnerability arises due to insufficient security controls in the parameter blacklist mechanism, which only targets MySQL JDBC driver-specific...

PYSEC-2026-92

mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface for mitmproxy. In mitmproxy 12.2.1 and below, the builtin LDAP proxy authentication does not correctly sanitize the username when querying the LDAP...

PYSEC-2026-125

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev98, the setsessioncookiesecure beforerequest handler in src/pyload/webui/app/init.py reads the X-Forwarded-Proto header from any HTTP request without validating that the request originates from a trusted prox...

PYSEC-2026-2230

The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. In versions 6.5 through 7.17.0, when HTMLExporter.embedimages=True, nbconvert's markdown renderer allows arbitrary file read via path traversal in image references. A malicious notebook...

PYSEC-2026-2229

The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions 6.5 through 7.17.0 allow arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The...

PYSEC-2026-2177

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Cassandra export module glances/exports/glancescassandra/init.py interpolates keyspace, table, and replicationfactor configuration values directly into CQL statements without validation. A user with write...

PYSEC-2026-2176

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, a Server-Side Request Forgery SSRF vulnerability exists in the Glances IP plugin due to improper validation of the publicapi configuration parameter. The value of publicapi is used directly in outbound HTTP...

PYSEC-2026-2175

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web server exposes a REST API /api/4/ that is accessible without authentication and allows cross-origin requests from any origin due to a permissive CORS policy Access-Control-Allow-Origin: . This...

PYSEC-2026-2270

python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, setkey and unsetkey in python-dotenv follow symbolic links when rewriting .env files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a...

PYSEC-2026-18

In case of SQL errors, exception/stack trace of errors was exposed in API even if "api/exposestacktraces" was set to false. That could lead to exposing additional information to potential attacker. Users are recommended to upgrade to Apache Airflow 3.2.0, which fixes the issue...

PYSEC-2026-19

Secrets in Variables saved as JSON dictionaries were not properly redacted - in case thee variables were retrieved by the user the secrets stored as nested fields were not masked.If you do not store variables with sensitive values in JSON form, you are not affected. Otherwise please upgrade to...

PYSEC-2026-13

Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low.Users are recommended to upgrade to Apache Airflow 3.2.0, whi...

PYSEC-2026-2158

gdown is a Google Drive public file/folder downloader. Versions prior to 5.2.2 are vulnerable to a Path Traversal attack within the extractall functionality. When extracting a maliciously crafted ZIP or TAR archive, the library fails to sanitize or validate the filenames of the archive members...

PYSEC-2026-2250

Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of...

PYSEC-2026-2315

Weblate is a web based localization tool. In versions prior to 5.17, repository-boundary validation relies on string prefix checks on resolved absolute paths. In multiple code paths, the check uses startswith against the repository root path. This is not path-segment aware and can be bypassed whe...

PYSEC-2026-155

Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17...

PYSEC-2026-156

Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on as a workaround...

PYSEC-2026-153

Weblate is a web based localization tool. In versions prior to 5.17, the translation memory API exposed unintended endpoints, which in turn didn't perform proper access control. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable this featur...

PYSEC-2026-2313

Weblate is a web based localization tool. In versions prior to 5.17, the ZIP download feature didn't verify downloaded files, potentially following symlinks outside the repository. This issue has been fixed in version 5.17...

PYSEC-2026-2314

Weblate is a web based localization tool. In versions prior to 5.17, a user with the project.edit permission granted by the per-project "Administration" role can configure machine translation service URLs pointing to arbitrary internal network addresses. During configuration validation, Weblate...

PYSEC-2026-2312

Weblate is a web based localization tool. In versions prior to 5.17, the ALLOWEDASSETDOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17...

PYSEC-2026-154

Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update...

PYSEC-2026-152

Weblate is a web based localization tool. In versions prior to 5.17, the translation memory API exposed unintended endpoints, which in turn didn't enforce proper access control. This issue has been fixed in version 5.17. If users are unable to update immediately, they can work around this issue b...

PYSEC-2026-2311

Weblate is a web based localization tool. In versions prior to 5.17, the tasks API didn't verify user access for pending tasks. This could expose logs of in-progress operations to users who don't have access to given scope. The attacker needs to brute-force the random UUID of the task, so...