CVE-2026-56765 Vikunja - Unauthenticated Instance-Wide Data Breach via Link Share Hash Disclosure Chained with Cross-Project Attachment IDOR

Vikunja before 2.2.1 contains an authorization flaw where the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. The GetTaskAttachment endpoint performs permission checks against user-supplied task IDs but fetches...

CVE-2026-56765

Summary (CVE-2026-56765): Vikunja prior to 2.2.1 contains two related authorization flaws. First, the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. Second, the GetTaskAttachment endpoint performs permission check...

EUVD-2026-42790

The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insappuploadimageasattachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the...

Avo: Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy

Summary Avo's direct attachment upload endpoint lacks server-side upload authorization and bypasses the documented field-level upload policy methods such as uploadFIELDID?. An authenticated Avo user who can reach the Avo attachment upload endpoint can replace or add attachment content, including...

GHSA-PQPW-CVM4-8MV9 Avo: Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy

Summary Avo's direct attachment upload endpoint lacks server-side upload authorization and bypasses the documented field-level upload policy methods such as uploadFIELDID?. An authenticated Avo user who can reach the Avo attachment upload endpoint can replace or add attachment content, including...

WordPress Easy Upload Files During Checkout plugin <= 3.0.1 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion vulnerability

Missing Authorization to Unauthenticated Arbitrary Attachment Deletion vulnerability discovered by Md. Moniruzzaman Prodhan NomanProdhan - Knight Squad in WordPress Plugin Easy Upload Files During Checkout versions = 3.0.1...

CVE-2026-12406

The CVE concerns the WordPress plugin “User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration” (WPUF). All versions up to 4.3.7 are affected by an authorization bypass that allows unauthenticated attackers to delete arbitrary media attachments with pos...

PT-2026-57342

Name of the Vulnerable Software and Affected Versions RoundCube versions prior to 1.7 Description A stored cross-site scripting XSS flaw exists where an unescaped attachment MIME type is displayed on the attachment-validation warning page. An attacker can craft a malicious MIME type string that,...

PT-2026-57041

Name of the Vulnerable Software and Affected Versions Avo versions 2.28.0 through 3.31.x Description Avo's direct attachment upload endpoint lacks server-side authorization, allowing authenticated users to bypass documented field-level upload policies. An attacker can replace or add attachment...

CVE-2026-57252

When the application opens a PDF file, during the process of JavaScript deleting pages and removing attachment annotations, it will cause the attachment panel to continue accessing invalid pointers, eventually leading to the application crashing...

CVE-2026-57252

When the application opens a PDF file, during the process of JavaScript deleting pages and removing attachment annotations, it will cause the attachment panel to continue accessing invalid pointers, eventually leading to the application crashing...

CVE-2026-57252 Foxit PDF Editor/Reader AcroForm Use-After-Free Remote Code Execution Vulnerability

When the application opens a PDF file, during the process of JavaScript deleting pages and removing attachment annotations, it will cause the attachment panel to continue accessing invalid pointers, eventually leading to the application crashing...

EUVD-2026-42200

When the application opens a PDF file, during the process of JavaScript deleting pages and removing attachment annotations, it will cause the attachment panel to continue accessing invalid pointers, eventually leading to the application crashing...

PT-2026-56351

Name of the Vulnerable Software and Affected Versions Foxit PDF Editor/Reader affected versions not specified Description A use-after-free issue occurs when the application opens a PDF file. During the process where JavaScript deletes pages and removes attachment annotations, the attachment panel...

GO-2026-5845 Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing in github.com/mattermost/mattermost-server

Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing in github.com/mattermost/mattermost-server...

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...

CVE-2026-59152

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.8.18, an attacker who can send an HTTP request to a server running the LangSmith SDK's TracingMiddleware can cause that server to read an arbitrary file from its local filesystem and upload the contents to...

CVE-2026-59152 Arbitrary server-side file read in LangSmith SDK TracingMiddleware

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.8.18, an attacker who can send an HTTP request to a server running the LangSmith SDK's TracingMiddleware can cause that server to read an arbitrary file from its local filesystem and upload the contents to...

EUVD-2026-41633

Gitea versions before 1.25.5 allow draft release data or attachments to be accessed without the required write permission...

CVE-2026-7311

The TinyPNG – JPEG, PNG & WebP image compression plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the deleteconvertedimagesize function in all versions up to, and including, 3.6.13. This makes it possible for authenticated attackers, with...