PYSEC-2026-1631 Potentially untrusted input is rendered as HTML in final output

Impact All users of mjml-python who insert untrusted data into mjml templates unless that data is checked in a very strict manner. User input like script would be rendered as in the final HTML output. The attacker must be able to control some data which is later injected in an mjml template which...

PYSEC-2026-1494 Kinto Attachment's attachments can be replaced on read-only records

Impact The attachment file of an existing record can be replaced if the user has "read" permission on one of the parent collection or bucket. And if the "read" permission is given to "system.Everyone" on one of the parent, then the attachment can be replaced on a record using an anonymous request...

PYSEC-2026-1908 Scrapy authorization header leakage on cross-domain redirect

Impact When you send a request with the Authorization header to one domain, and the response asks to redirect to a different domain, Scrapy’s built-in redirect middleware creates a follow-up redirect request that keeps the original Authorization header, leaking its content to that second domain...

PYSEC-2026-1258 Allegro AI ClearML path traversal vulnerability

A path traversal vulnerability in versions 1.4.0 to 1.14.1 of the client SDK of Allegro AI’s ClearML platform enables a maliciously uploaded dataset to write local or remote files to an arbitrary location on an end user’s system when interacted with...

PYSEC-2026-1817 pyLoad open redirect vulnerability due to improper validation of the is_safe_url function

Summary Open redirect vulnerability due to incorrect validation of input values when redirecting users after login. Details pyload is validating URLs via the getredirecturl function when redirecting users at login. The URL entered in the next variable goes through the issafeurl function, where a...

PYSEC-2026-1907 Scrapy decompression bomb vulnerability

Impact Scrapy limits allowed response sizes by default through the DOWNLOADMAXSIZE and DOWNLOADWARNSIZE settings. However, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to...

PYSEC-2026-1509 langchain Server-Side Request Forgery vulnerability

With the following crawler configuration: python from bs4 import BeautifulSoup as Soup url = "https://example.com" loader = RecursiveUrlLoader url=url, maxdepth=2, extractor=lambda x: Soupx, "html.parser".text docs = loader.load An attacker in control of the contents of https://example.com could...

PYSEC-2026-1257 Allegro AI ClearML Stores Credentials in Plaintext in MongoDB Instance

Allegro AI’s open-source version of ClearML stores passwords in plaintext within the MongoDB instance, resulting in a compromised server leaking all user emails and passwords...

PYSEC-2026-1416 Gradio apps vulnerable to timing attacks to guess password

Impact This security policy is with regards to a timing attack that allows users of Gradio apps to potentially guess the password of password-protected Gradio apps. This relies on the fact that string comparisons in Python terminate early, as soon as there is a string mismatch. Because Gradio app...

PYSEC-2026-1283 Python Cryptography package vulnerable to Bleichenbacher timing oracle attack

A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data...

PYSEC-2026-1256 Allegro AI ClearML vulnerable to deserialization of untrusted data

Deserialization of untrusted data can occur in versions 0.17.0 to 1.14.2 of the client SDK of Allegro AI’s ClearML platform, enabling a maliciously uploaded artifact to run arbitrary code on an end user’s system when interacted with...

PYSEC-2026-1405 glance-store logs s3 access keys

A vulnerability was found in python-glance-store. The issue occurs when the package logs the accesskey for the glance-store when the DEBUG log level is enabled...

PYSEC-2026-1595 m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657

A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data...

PYSEC-2026-1079 ai-flow Deserialization of Untrusted Data vulnerability

A vulnerability was found in flink-extended ai-flow 0.3.1. It has been declared as critical. Affected by this vulnerability is the function cloudpickle.loads of the file \aiflow\cli\commands\workflowcommand.py. The manipulation leads to deserialization. The attack can be launched remotely. The...

PYSEC-2026-2003 vantage6 has insecure SSH configuration for node and server containers

Impact Nodes and servers get a ssh config by default that permits root login with password authentication. In a proper deployment, the SSH service is not exposed so there is no risk, but not all deployments are ideal. The default should therefore be less permissive. We will probably opt to...

PYSEC-2026-2008 vantage6 vulnerable to username timing attack

Impact It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks Workarounds No...

PYSEC-2026-1285 Null pointer dereference in PKCS12 parsing

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can contain certificates...

PYSEC-2026-1144 Apache Airflow CNCF Kubernetes provider, Apache Airflow: Kubernetes configuration file saved without encryption in the Metadata and logged as plain text in the Triggerer service

Since version 5.2.0, when using deferrable mode with the path of a Kubernetes configuration file for authentication, the Airflow worker serializes this configuration file as a dictionary and sends it to the triggerer by storing it in metadata without any encryption. Additionally, if used with an...

PYSEC-2026-1386 Path traversal in flaskcode

An issue was discovered in the flaskcode package through 0.0.8 for Python. An unauthenticated directory traversal, exploitable with a GET request to a /resource-data/.txt URI from views.py, allows attackers to read arbitrary files...

PYSEC-2026-1797 Cross-Frame Scripting vulnerability has been found on Plone CMS

A Cross-Frame Scripting vulnerability has been found on Plone CMS affecting version below 6.0.5. An attacker could store a malicious URL to be opened by an administrator and execute a malicios iframe element...

PYSEC-2026-1949 Privilege escalation for users that can access mock configuration

The Mock software contains a vulnerability wherein an attacker could potentially exploit privilege escalation, enabling the execution of arbitrary code with root user privileges. This weakness stems from the absence of proper sandboxing during the expansion and execution of Jinja2 templates, whic...

PYSEC-2026-1707 JupyterLab vulnerable to SXSS in Markdown Preview

Impact The vulnerability depends on user interaction by opening a malicious notebook with Markdown cells, or Markdown file using JupyterLab preview feature. A malicious user can access any data that the attacked user has access to as well as perform arbitrary requests acting as the attacked user...

PYSEC-2026-1478 Unsecured endpoints in the jupyter-lsp server extension

Impact Installations of jupyter-lsp running in environments without configured file system access control on the operating system level, and with jupyter-server instances exposed to non-trusted network are vulnerable to unauthorised access and modification of file system beyond the jupyter root...

PYSEC-2026-1387 Path traversal in flaskcode

An issue was discovered in the flaskcode package through 0.0.8 for Python. An unauthenticated directory traversal, exploitable with a POST request to a /update-resource-data/ URI from views.py, allows attackers to write to arbitrary files...

PYSEC-2026-1325 Minerva timing attack on P-256 in python-ecdsa

python-ecdsa has been found to be subject to a Minerva timing attack on the P-256 curve. Using the ecdsa.SigningKey.signdigest API function and timing signatures an attacker can leak the internal nonce which may allow for private key discovery. Both ECDSA signatures, key generation, and ECDH...

PYSEC-2026-1706 JupyterLab vulnerable to potential authentication and CSRF tokens leak

Impact Users of JupyterLab who click on a malicious link may get their Authorization and XSRFToken tokens exposed to a third party when running an older jupyter-server version. Patches JupyterLab 4.1.0b2, 4.0.11, and 3.6.7 were patched. Workarounds No workaround has been identified, however users...

PYSEC-2026-1662 MLflow Path Traversal Vulnerability

This vulnerability is capable of writing arbitrary files into arbitrary locations on the remote filesystem in the context of the server process...

PYSEC-2026-1820 pyload Unauthenticated Flask Configuration Leakage vulnerability

Summary Any unauthenticated user can browse to a specific URL to expose the Flask config, including the SECRETKEY variable. Details Any unauthenticated user can browse to a specific URL to expose the Flask config, including the SECRETKEY variable. PoC Run pyload in the default configuration by...

PYSEC-2026-1659 MLflow Local File Disclosure Vulnerability

This vulnerability enables malicious users to read sensitive files on the server...

PYSEC-2026-1811 PyCryptodome and pycryptodomex side-channel leakage for OAEP decryption

PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack...

PYSEC-2026-1180 Apache Superset incorrect write permissions vulnerability

An authenticated Gamma user has the ability to create a dashboard and add charts to it, this user would automatically become one of the owners of the charts allowing him to incorrectly have write permissions to these charts.This issue affects Apache Superset: before 2.1.3, from 3.0.0 before 3.0.2...

PYSEC-2026-1184 Apache Superset SQL injection vulnerability

A wherein JINJA macro allows users to specify a quote, which combined with a carefully crafted statement would allow for SQL injection in Apache Superset.This issue affects Apache Superset: before 2.1.3, from 3.0.0 before 3.0.2. Users are recommended to upgrade to version 2.1.3 or 3.0.2, which...

PYSEC-2026-1473 Jinja vulnerable to HTML attribute injection when passing user input as keys to xmlattr filter

The xmlattr filter in affected versions of Jinja accepts keys containing spaces. XML/HTML attributes cannot contain spaces, as each would then be interpreted as a separate attribute. If an application accepts keys as opposed to only values as user input, and renders these in pages that other user...

PYSEC-2026-1818 pyload Log Injection vulnerability

Summary A log injection vulnerability was identified in pyload. This vulnerability allows any unauthenticated actor to inject arbitrary messages into the logs gathered by pyload. Details pyload will generate a log entry when attempting to sign in with faulty credentials. This entry will be in the...

PYSEC-2026-1388 fonttools XML External Entity Injection (XXE) Vulnerability

Summary As of fonttools=4.28.2 the subsetting module has a XML External Entity Injection XXE vulnerability which allows an attacker to resolve arbitrary entities when a candidate font OT-SVG fonts, which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the...

PYSEC-2026-1120 Ansible symlink attack vulnerability

An absolute path traversal attack exists in the Ansible automation platform. This flaw allows an attacker to craft a malicious Ansible role and make the victim execute the role. A symlink can be used to overwrite a file outside of the extraction path...

PYSEC-2026-1319 D-Tale server-side request forgery through Web uploads

Impact Users hosting D-Tale publicly can be vulnerable to server-side request forgery SSRF allowing attackers to access files on the server. Patches Users should upgrade to version 3.9.0 where the "Load From the Web" input is turned off by default. You can find out more information on how to turn...

PYSEC-2026-1122 Ansible template injection vulnerability

A template injection flaw was found in Ansible where a user's controller internal templating operations may remove the unsafe designation from template data. This issue could allow an attacker to use a specially crafted file to introduce templating injection when supplying templating data...

PYSEC-2026-1451 User accounts disclosed to unauthenticated actors on the LAN

Summary The login page discloses all active user accounts to any unauthenticated browsing request originating on the Local Area Network. Details Starting the Home Assistant 2023.12 release, the login page returns all currently active user accounts to browsing requests from the Local Area Network...

PYSEC-2026-1661 Information exposure in MLflow

An issue in MLFlow versions 2.8.1 and before allows a remote attacker to obtain sensitive information via a crafted request to REST API...

PYSEC-2026-1807 pubnub Insufficient Entropy vulnerability

Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0;...

PYSEC-2026-1312 DockerSpawner allows any image by default

Impact Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying DockerSpawner.allowedimages configuration allow users to launch any pullable image, instead of restricting to only the single configured image, as intended. Patches Upgrade to DockerSpawner 13...

PYSEC-2026-1664 Exposure of Sensitive Information in mltable

Azure Machine Learning Compute Instance for SDK Users Information Disclosure Vulnerability...

PYSEC-2026-1317 Reflected XSS Vulnerability in dpaste

Impact A security vulnerability has been identified in the expires parameter of the dpaste API, allowing for a POST Reflected XSS attack. This vulnerability can be exploited by an attacker to execute arbitrary JavaScript code in the context of a user's browser, potentially leading to unauthorized...

PYSEC-2026-1249 Out of memory error when submitting the dataset form with a specially-crafted field

Impact When submitting a POST request to the /dataset/new endpoint including either the auth cookie or the Authorization header with a specially-crafted field, an attacker can create an out-of-memory error in the hosting server. To trigger this error the user needs to have permissions to create o...

PYSEC-2026-1758 Prefix Truncation Attack against ChaCha20-Poly1305 and Encrypt-then-MAC aka Terrapin

Summary Terrapin is a prefix truncation attack targeting the SSH protocol. More precisely, Terrapin breaks the integrity of SSH's secure channel. By carefully adjusting the sequence numbers during the handshake, an attacker can remove an arbitrary amount of messages sent by the client or server a...

PYSEC-2026-1652 mlflow Command Injection vulnerability

with only one user interactiondownload a malicious config, attackers can gain full command execution on the victim system...

PYSEC-2026-1167 Apache Superset uncontrolled resource consumption

Uncontrolled resource consumption can be triggered by authenticated attacker that uploads a malicious ZIP to import database, dashboards or datasets. This vulnerability exists in Apache Superset versions up to and including 2.1.2 and versions 3.0.0, 3.0.1...

PYSEC-2026-1799 Cross-Site Request Forgery vulnerability in Prefect

An attacker is able to steal secrets and potentially gain remote code execution via CSRF using a self-hosted, open source Prefect API...

PYSEC-2026-1188 Apache Superset has Incorrect Default Permissions

Unnecessary read permissions within the Gamma role would allow authenticated users to read configured CSS templates and annotations. This issue affects Apache Superset: before 2.1.2. Users should upgrade to version or above 2.1.2 and run superset init to reconstruct the Gamma role or remove canre...