PYSEC-2026-2624 mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete

Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete Summary All HTTP routes under /api/documents/ in mcp-memory-service are served without any authentication dependency, even when the server is configured with an API key MCPAPIKEY or OAuth. An...

PYSEC-2026-2792 Open Babel has out-of-bounds write in MOL2 attribute/value parser

Summary A memory-safety vulnerability in Open Babel's MOL2 parser allowed an out-of-bounds write when reading a crafted input file. Details The flaw was in the attribute/value parsing path of the MOL2 reader. An over-long attribute or value caused the parser to write past the end of a fixed-size...

PYSEC-2026-2788 Open Babel has out-of-bounds write in CSR PadString (title field)

Summary A memory-safety vulnerability in Open Babel's CSR parser allowed an out-of-bounds write when reading a crafted input file. Details The flaw was in the PadString helper used to handle the CSR title field. A title longer than the fixed destination buffer caused the parser to write past the...

PYSEC-2026-2622 mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call

Summary The HTTP MCP JSON-RPC endpoint at /mcp requires only OAuth read scope for all requests, then dispatches tools/call directly to handlers that include mutating tools. A read-only OAuth client can call storememory and deletememory through MCP even though the corresponding REST endpoints...

PYSEC-2026-2974 py7zr: Arbitrary File Write Vulnerability

Summary There exists an arbitrary file write vulnerability in py7zr 1.1.0, latest, which allows symbolic links to be recreated outside the destination directory via crafted malicious symbolic link chains. When using extractall to extract an archive, the library restores these symbolic links,...

py7zr: Arbitrary File Write Vulnerability

SummaryThere exists an arbitrary file write vulnerability in py7zr 1.1.0, latest, which allows symbolic links to be recreated outside the destination directory via crafted malicious symbolic link chains. When using extractall to extract an archive, the library restores these symbolic links, linki...

PYSEC-2026-2393 BBOT: Arbitrary File Write in postman_download Module

The postmandownload module uses the workspace name field from the Postman API to construct the local directory path without sanitization. If a malicious workspace has a name containing path traversal characters, pathlib resolves the path outside the intended output directory, allowing an attacker...

PYSEC-2026-2394 BBOT: Symlink-Following Arbitrary Write via github_workflows Module

The githubworkflows module constructs local directory paths from user-controlled repository names without validating for symlinks. A local attacker sharing the scan directory can plant a symlink at the predictable output path, causing workflow data to be written to an attacker-chosen location...

PYSEC-2026-2722 Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar

Summary POST /api/v1/calendars/events/eventid/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendarid supplied in the request body. The model layer then persists the new calendarid unconditionally. A regula...

PDM wheel installation leads to Path Traversal via overridden write_to_fs

InstallDestination.writetofs in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe pathwithdestdir which validates via Path.resolve + isrelativeto with a bare os.path.join that performs no path validation. A malicious wheel with travers...

PYSEC-2026-2861 PDM wheel installation leads to Path Traversal via overridden write_to_fs

InstallDestination.writetofs in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe pathwithdestdir which validates via Path.resolve + isrelativeto with a bare os.path.join that performs no path validation. A malicious wheel with travers...

PYSEC-2026-2971 rattler has an entry-point path traversal in noarch:python install (arbitrary file write)

Summary EntryPoint::FromStr in rattlercondatypes performs only .trim on the command field before the linker joins it onto the install prefix and writes an executable Python script. A malicious noarch:python package can ship an info/link.json with an entry-point name containing .., /, , or an...

PYSEC-2026-2916 PraisonAI has an Arbitrary File Write in Python API

Bug Report: Arbitrary File Write in Python API Summary Hidden metadata in a webpage causes PraisonAI agents to write attacker-controlled content to arbitrary paths. writefile skips path validation when workspace=None always None in production. Affected PraisonAI outputfile: /tmp/flag.txt...

PYSEC-2026-2463 Dulwich has an arbitrary file write via NTFS-hostile tree entries on Windows

Impact Arbitrary file write leading to remote code execution when cloning or checking out a malicious Git repository on Windows. Dulwich's path-element validator accepted tree entries whose filenames contained bytes that Windows interprets as structural path syntax: - \ — the Windows path...

PYSEC-2026-2423 compliance-trestle - jinja has an Arbitrary File Write via Path Traversal

Relevant Products/Components: trestle/core/commands/author/jinja.py trestle author jinja --- Detailed Description: The -o/--output argument in trestle author jinja allows writing files outside the intended workspace. The application does not properly validate: ../ ..\ absolute paths This allows...

PYSEC-2026-2424 compliance-trestle Remote Fetching Mechanism has an Arbitrary File Write via Cache Path Traversal

Summary The compliance-trestle library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher constructs the local cache file path from the URL path component without sanitizing path traversal sequences ../. When a remote OSCAL profile references a URL with traversal in its path, the HTTP...

PYSEC-2026-2699 Open WebUI Vulnerable to IDOR: Retrieval API Bypasses Knowledge Base Access Controls

IDOR: Retrieval API Bypasses Knowledge Base Access Controls Author: Andrew Orr Summary validatecollectionaccess PR 22109 checks the user-memory- and file- collection name prefixes but does not check knowledge base collections, which use raw UUIDs as collection names. Any authenticated user who...

PYSEC-2026-2745 Open WebUI: Read-Only Users Can Toggle Note Pin Status via Incorrect Permission Check (Write via Read-Only Access)

Summary The POST /api/v1/notes/id/pin endpoint performs a write operation toggling the ispinned field but only checks for read permission. Users with read-only access to a shared note can pin/unpin it, which is a state-modifying action that should require write permission. All other write endpoin...

PYSEC-2026-2737 Open WebUI Arbitrary File Write, Delete via Path Traversal

CONFIDENTIAL Vulnerability Disclosure Analysis Documentation ----------------------------------------------- Vulnerability Details --------------------- 1. Discoverer: Taylor Pennington of KoreLogic, Inc. 2. Date Submitted: June 11, 2024 3. Title: Open WebUI Arbitrary File Write, Delete via Path...

PYSEC-2026-2762 Read-Only Open WebUI Users Can Modify Collaborative Documents via Socket.IO

Read-Only Users Can Modify Collaborative Documents via Socket.IO Affected Component Socket.IO collaborative document editing handler: - backend/openwebui/socket/main.py lines 667-721, ydoc:document:update handler Affected Versions Current main branch and likely all versions with collaborative not...