CVE-2026-40873 mailcow: dockerized vulnerable to stored XSS in Quarantine attachment filenames

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, the Quarantine details modal injects attachment filenames into HTML without escaping, allowing arbitrary HTML/JS execution. An attacker can deliver an email with a crafted attachment name s...

CVE-2026-41192

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the reply and draft flows trust client-supplied encrypted attachment IDs. Any IDs present in attachmentsall but omitted from retained lists are decrypted and passed directly to Attachment::deleteByIds. Because...

CVE-2026-40867 Horilla: Unauthorized Helpdesk Attachment Access via Attachment ID Manipulation

Horilla is a free and open source Human Resource Management System HRMS. In 1.5.0, a broken access control vulnerability in the helpdesk attachment viewer allows any authenticated user to view attachments from other tickets by changing the attachment ID. This can expose sensitive support files an...

CVE-2026-40867

Horilla CVE-2026-40867 affects Horilla HRMS (version 1.5.0). A broken access control flaw in the helpdesk attachment viewer lets any authenticated user view attachments from other tickets by altering the attachment ID, exposing sensitive support files and internal documents across unrelated users...

GHSA-4C99-QJ7H-P3VG nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames

Arbitrary File Write via Path Traversal in Cell Attachment Filenames Summary nbconvert allows arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The ExtractAttachmentsPreprocessor passes attachment...

EUVD-2026-24023

nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames...

nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames

Arbitrary File Write via Path Traversal in Cell Attachment Filenames Summary nbconvert allows arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The ExtractAttachmentsPreprocessor passes attachment...

CVE-2026-41192 FreeScout's client-controlled attachment IDs allow deletion of existing conversation attachments

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the reply and draft flows trust client-supplied encrypted attachment IDs. Any IDs present in attachmentsall but omitted from retained lists are decrypted and passed directly to Attachment::deleteByIds. Because...

EUVD-2026-24221

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the reply and draft flows trust client-supplied encrypted attachment IDs. Any IDs present in attachmentsall but omitted from retained lists are decrypted and passed directly to Attachment::deleteByIds. Because...

CVE-2026-39377

A flaw was found in nbconvert, a tool used to convert Jupyter notebooks. When processing notebooks containing specially crafted cell attachment filenames, a remote attacker can exploit a path traversal vulnerability. This allows the attacker to write arbitrary files to locations outside the...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to improper access control. The vulnerability is due to failure to validate user channel membership when attaching posts to Jira issues, which allows an authenticated attacker with Jira plugin access to read post content and attachments from...

CVE-2026-40496

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: md5APPKEY + attachmentid + size. Since attachmentid is sequential and size can be brute-forced in a small range, an unauthenticate...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the ExtractAttachmentsPreprocessor function. An attacker can write arbitrary files to locations outside the intended output directory by crafting cell attachment filenames containing path traversal sequences...

EUVD-2026-24049

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: md5APPKEY + attachmentid + size. Since attachmentid is sequential and size can be brute-forced in a small range, an unauthenticate...

CVE-2026-40496 FreeScout has Predictable Attachment Token that Allows Unauthenticated Private File Download via Brute Force

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: md5APPKEY + attachmentid + size. Since attachmentid is sequential and size can be brute-forced in a small range, an unauthenticate...

CVE-2026-40496

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: md5APPKEY + attachmentid + size. Since attachmentid is sequential and size can be brute-forced in a small range, an unauthenticate...

CVE-2026-39377

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...

DEBIAN-CVE-2026-39377

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...

CVE-2026-39377 nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames

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...

CVE-2026-39377 nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames

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...