Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python source without validation

Summary Flowise's CSVAgent interpolates an attacker-controlled segment of the csvFile data URI directly into a Python source-code template that is then executed by Pyodide. Because Pyodide is loaded with the default js bridge to globalThis which on Node.js exposes eval and dynamic import, the...

CVE-2026-54365

CentreStack prior to version 17.3 contains an unauthenticated deserialization vulnerability in GSNamespace.dll. An attacker can send a crafted base64-encoded XML via exposed API endpoints (jsonimportuserbyupn, jsonimportuserbyupnex, or japiimportuserbyupn) to trigger InternalImportAdUserByUPN(), ...

BIT-OPENBAO-2025-62705 OpenBao and Vault Leak []byte Fields in Audit Logs

OpenBao is an open source identity-based secrets management system. Prior to version 2.4.2, OpenBao's audit log did not appropriately redact fields when relevant subsystems sent byte response parameters rather than strings. This includes, but is not limited to sys/raw with use of encoding=base64,...

MAL-2026-10046 Malicious code in chai-as-smart (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector bbeb8dc929ba80789f3386d489e22fc4efa5fa43b2901a4d6aa8524c03168a58 On require, index.js spawns lib/initializeCaller.js as a detached background process. That script decodes a base64-hidden URL...

Craft CMS: Sensitive File Disclosure / Server-Side File Read

The dataUrl Twig function is included in Craft’s Twig sandbox allowlist, allowing any control panel user granted the utility:system-messages permission to embed a file-reading payload into system email templates. When those emails are sent, the server reads the target file and returns its content...

Horovod Vulnerable to Command Injection

Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the ElasticRendezvousHandler, a subclass of KVStoreHandler. Specifically, the putvalue method in ElasticRendezvousHandler...

PT-2026-53444

Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the ElasticRendezvousHandler, a subclass of KVStoreHandler. Specifically, the put value method in ElasticRendezvousHandler...

CVE-2026-56766 Hydra - Stack Buffer Overflow in NTLM Authentication Handler

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

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...

MAL-2026-6268 Malicious code in zomato-core (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector d5042b2ca8b8b3ba1f073344762615dc532864913af3f54a16540d44dde97ba5 package.json declares a preinstall lifecycle hook that runs curl to POST the installer's hostname, whoami output, current working directory, and the...

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

summary 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 global file table with no ownership check. An authenticated user can therefore set imageurl.url to another...

PT-2026-50481

Name of the Vulnerable Software and Affected Versions Open-webui affected versions not specified Description An authenticated user can access files belonging to other users by exploiting a lack of ownership verification in the image processing path. When the POST endpoint "/api/chat/completions"...

PT-2026-41167

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.3 Description The channel webhook create and update flow accepts arbitrary profile image url values, including base64-encoded SVG payloads. The endpoint '/api/v1/channels/webhooks/webhook id/profile/image'...

PT-2026-37293

Name of the Vulnerable Software and Affected Versions WWBN AVideo versions prior to 29.0 Description A Cross-Site Request Forgery CSRF issue exists in the legacy profile-photo endpoint "objects/userSavePhoto.php". The endpoint accepts a base64 POST parameter imgBase64 and writes the decoded bytes...

USN-8136-2: Dovecot regression

USN-8136-1 fixed vulnerabilities in Dovecot. The update caused a regression on Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An...

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...

BIT-LIBPYTHON-2026-3446 Base64 decoding stops at first padded quad by default

When calling base64.b64decode or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use...

USN-8136-1 dovecot vulnerabilities

It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10. CVE-2025-59028 It was discovered that Dovecot script decode2text.sh incorrectly handled zip files. An attacke...

USN-8136-1: Dovecot vulnerabilities

It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10. CVE-2025-59028 It was discovered that Dovecot script decode2text.sh incorrectly handled zip files. An attacke...

SUSE CVE-2025-59028

When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes hea...