OPENSUSE-SU-2026:10972-1 python311-jupyter-server-2.19.0-1.1 on GA media

These are all security issues fixed in the python311-jupyter-server-2.19.0-1.1 package on the GA media of openSUSE Tumbleweed...

CVE-2026-49384

In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible...

CVE-2026-40171

In Jupyter Notebook versions 7.0.0 through 7.5.5, JupyterLab versions 4.5.6 and earlier, and the corresponding @jupyter-notebook/help-extension and @jupyterlab/help-extension packages before 7.5.6 and 4.5.7, a stored cross-site scripting issue in the help command linker can be chained with...

CVE-2026-35397

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...

CVE-2026-6657

A flaw was found in jupyter-server. A remote attacker can bypass Cross-Origin Resource Sharing CORS origin validation when the alloworiginpat configuration is used. This vulnerability allows malicious domains to pass validation against patterns intended for trusted domains. This could lead to...

SUSE CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-40934

A flaw was found in Jupyter Server. The secret used to sign authentication cookies is not rotated when a user changes their password, allowing previously issued authentication cookies to remain valid. A remote attacker who has captured a session cookie can retain full authenticated access to the...

UBUNTU-CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allow...

JetBrains PyCharm < 2025.3.4 Stored XSS

According to its self-reported version, the JetBrains PyCharm installation on the remote host is prior to 2025.3.4. It is, therefore, affected by a stored cross-site scripting XSS vulnerability in Jupyter notebook Markdown cells. In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook...

Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids Bypass

Summary Jupyter Enterprise Gateway has a prohibited UID and GID feature that by default prevents launching kernels with UID or GID 0 root. This can be bypassed. It is possible to launch kernels with a prohibited UID and/or GID by using a specially crafted KERNELUID or KERNELGID value. The feature...

CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657

CVE-2026-6657 affects jupyter-server 1.12.0–2.17.0. Root cause: using re.match() to validate the Origin header in allow_origin_pat, causing attacker-controlled domains like trusted.example.com.evil.com to bypass CORS origin checks. Impact stated across CORS headers, WebSocket connections, referer...

CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

EUVD-2026-34104

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

Permissive Regular Expression

Overview Affected versions of this package are vulnerable to Permissive Regular Expression in the use of re.match to verify alloworiginpat values. This allows an attacker to bypass intended CORS restrictions and gain unauthorized access to sensitive API responses. Code execution is possible by...

CVE-2026-5422

A flaw was found in jupyter-server. This path traversal vulnerability exists due to insufficient validation of file paths, specifically an incorrect root directory boundary check and improper handling of directory traversal sequences. This allows a remote attacker with low privileges to bypass...

CVE-2026-44181

creationtimestamp| type| source ---|---|--- 2026-06-03 03:02:38+00:00| published-proof-of-concept| https://github.com/jupyter-server/enterprisegateway/security/advisories/GHSA-f49j-v924-fx9w...