CVE-2026-52816

Gogs is an open source self-hosted Git service. Prior to 0.14.3, the Jupyter Notebook ipynb sanitizer endpoint at POST /-/api/sanitizeipynb allows arbitrary data: URIs without proper restrictions, potentially leading to Cross-Site Scripting XSS. The endpoint uses bluemonday.UGCPolicy with...

CVE-2026-52816

Gogs is an open source self-hosted Git service. Prior to 0.14.3, the Jupyter Notebook ipynb sanitizer endpoint at POST /-/api/sanitizeipynb allows arbitrary data: URIs without proper restrictions, potentially leading to Cross-Site Scripting XSS. The endpoint uses bluemonday.UGCPolicy with...

CVE-2026-46553

NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, the upload-by-URL path did not enforce NCATTACHMENTFIELDSIZE against either the remote file's advertised Content-Length or the decoded length of a data: URI, allowing an authenticated user to bypass the configured...

CVE-2026-54009

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, POST /api/chat/completions accepts an imageurl.url value that, when it does NOT start with http://, https://, or data:image/, is interpreted as a file id and resolved against the...

Gogs's Unauthenticated Jupyter Notebook (ipynb) Sanitizer allows arbitrary data: URIs leading to XSS

Summary The Jupyter Notebook ipynb sanitizer endpoint at POST /-/api/sanitizeipynb allows arbitrary data: URIs without proper restrictions, potentially leading to Cross-Site Scripting XSS. The endpoint uses bluemonday.UGCPolicy with p.AllowURLSchemes"data" which permits all data URI schemes...

CVE-2026-54009 Open WebUI: Cross-user file disclosure via /api/chat/completions image_url field

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, POST /api/chat/completions accepts an imageurl.url value that, when it does NOT start with http://, https://, or data:image/, is interpreted as a file id and resolved against the...

PyJWKClient: missing scheme allowlist enables CVE-2024-21643-class SSRF + token forgery via file://, ftp://, data: schemes

!NOTE The library does not directly return non-HTTPS URI contents to the attacker; the chained "plant a JWKS to forge tokens" scenario described in the original report requires additional application-layer flaws attacker write access to a filesystem path, untrusted jku derivation that this fix do...

OESA-2026-2666 libsoup3 security update

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP Simple Object Access Protocol implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. Security Fixes: A flaw was found in libsoup. The SoupWebsocketConnection may accep...

PT-2026-46127

Impact The HTML backend did not perform sufficient validation during resource handling: - Accepted file:// URIs enabling local file system access when enable local fetch=True - Path resolution allowed traversal outside intended directories via ../ sequences and absolute paths - Did not block...

PYSEC-0000-CVE-2026-48522

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient passes its uri argument directly to urllib.request.urlopen which uses Python stdlib's default OpenerDirector registering HTTPHandler, HTTPSHandler, FTPHandler, FileHandler, and DataHandler. There is currently no...

PYSEC-2026-175

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient passes its uri argument directly to urllib.request.urlopen which uses Python stdlib's default OpenerDirector registering HTTPHandler, HTTPSHandler, FTPHandler, FileHandler, and DataHandler. There is currently no...

GHSA-8RWR-F68V-CVW6 NocoDB: Attachment Size Limit Bypass via Upload-by-URL

Summary The upload-by-URL path did not enforce NCATTACHMENTFIELDSIZE against either the remote file's advertised Content-Length or the decoded length of a data: URI, allowing an authenticated user to bypass the configured per-file size limit. Details The attachments service now checks...

PT-2026-42608

Summary The upload-by-URL path did not enforce NC ATTACHMENT FIELD SIZE against either the remote file's advertised Content-Length or the decoded length of a data: URI, allowing an authenticated user to bypass the configured per-file size limit. Details The attachments service now checks NC...

PT-2026-42679

Name of the Vulnerable Software and Affected Versions NocoDB affected versions not specified Description An issue exists where the upload-by-URL path fails to enforce the NC ATTACHMENT FIELD SIZE limit against the remote file's advertised Content-Length or the decoded length of a data: URI. This...

GHSA-3WGJ-C2HG-VM6Q Open WebUI vulnerable to stored XSS via OAuth picture claim stored as SVG data URI in profile_image_url

Summary When a user signs in via OAuth, Open WebUI fetches the picture claim URL, infers a MIME type from the URL extension via mimetypes.guesstype, and stores data:;base64,... as the user's profile image. The OAuth code path does not go through the validateprofileimageurl Pydantic validator that...

Open WebUI vulnerable to stored XSS via OAuth picture claim stored as SVG data URI in profile_image_url

Summary When a user signs in via OAuth, Open WebUI fetches the picture claim URL, infers a MIME type from the URL extension via mimetypes.guesstype, and stores data:;base64,... as the user's profile image. The OAuth code path does not go through the validateprofileimageurl Pydantic validator that...

CVE-2018-25269

CVE-2018-25269 : ICEWARP 11.0.0.0 contains a cross-site scripting vulnerability allowing HTML injection into emails. Attackers can embed base64 payloads in object/embed tags and craft emails with data URIs that execute scripts when viewed, potentially compromising user sessions and leaking sensit...

EUVD-2026-24025

nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image Embedding...

nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image Embedding

Summary When HTMLExporter.embedimages=True, nbconvert's markdown renderer allows arbitrary file read via path traversal in image references. A malicious notebook can exfiltrate sensitive files from the conversion host by embedding them as base64 data URIs in the output HTML. Patches Upgrade to...

CVE-2026-39378

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...