Starlette Denial of service (DoS) via multipart/form-data

SummaryStarlette treats multipart/form-data parts without a filename as text form fields and buffers those in byte strings with no size limit. This allows an attacker to upload arbitrary large form fields and cause Starlette to both slow down significantly due to excessive memory allocations and...

PYSEC-2026-1943 Starlette Denial of service (DoS) via multipart/form-data

Summary Starlette treats multipart/form-data parts without a filename as text form fields and buffers those in byte strings with no size limit. This allows an attacker to upload arbitrary large form fields and cause Starlette to both slow down significantly due to excessive memory allocations and...

aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

SummaryAn attacker can send a specially crafted POST multipart/form-data request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. ImpactAn attacker can stop the application from serving requests after sending a single...

PYSEC-2026-1098 aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

Summary An attacker can send a specially crafted POST multipart/form-data request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. Impact An attacker can stop the application from serving requests after sending a single...

python-multipart vulnerable to Content-Type Header ReDoS

SummaryWhen using form data, python-multipart uses a Regular Expression to parse the HTTP Content-Type header, including options.An attacker could send a custom-made Content-Type option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely minutes or...

PYSEC-2026-1850 python-multipart vulnerable to Content-Type Header ReDoS

Summary When using form data, python-multipart uses a Regular Expression to parse the HTTP Content-Type header, including options. An attacker could send a custom-made Content-Type option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely minutes or...

GHSA-525M-7F82-2MF7 @conform-to/dom parseSubmission vulnerable to CPU exhaustion when parsing many unique form fields

A CPU exhaustion vulnerability exists in Conform's parseSubmission future API when parsing FormData or URLSearchParams submissions with many unique field names. The parser previously looked up values by field name, which could require repeated scans of the submitted entries and cause excessive...

@conform-to/dom parseSubmission vulnerable to CPU exhaustion when parsing many unique form fields

A CPU exhaustion vulnerability exists in Conform's parseSubmission future API when parsing FormData or URLSearchParams submissions with many unique field names. The parser previously looked up values by field name, which could require repeated scans of the submitted entries and cause excessive...

PT-2026-55448

A CPU exhaustion vulnerability exists in Conform's parseSubmission future API when parsing FormData or URLSearchParams submissions with many unique field names. The parser previously looked up values by field name, which could require repeated scans of the submitted entries and cause excessive...

CVE-2026-54283

A flaw was found in Starlette where the request.form method silently ignores configured resource limits maxfields and maxpartsize when parsing application/x-www-form-urlencoded data. An unauthenticated attacker can exploit this by sending a urlencoded request body with an arbitrarily large number...

SUSE CVE-2026-12143

form-data is a library for creating readable multipart/form-data streams. In versions through 4.0.5, the field argument to FormDataappend and the filename option are concatenated verbatim into the Content-Disposition header without escaping carriage return CR, line feed LF, or double-quote "...

CVE-2026-58448 yudao-cloud < 2026.06 - BPM Module Broken Access Control via process-instance API

yudao-cloud before 2026.06 contains a broken access control vulnerability in the BPM module that allows any authenticated user to access arbitrary process instance records by supplying a caller-controlled process-instance identifier to an unprotected endpoint lacking the @PreAuthorize annotation...

GHSA-QCM7-3VPR-HJ5H @adonisjs/bodyparser has an incomplete fix for CVE-2026-25754

Summary The fix for GHSA-f5x2-vj4h-vg4c / CVE-2026-25754 introduced in commit 40e1c71 is incomplete and can be bypassed through nested prototype pollution payloads. The original patch replaced the internal FormFields storage object with Object.createnull, preventing direct payloads such as...

PT-2026-54440

Name of the Vulnerable Software and Affected Versions AdonisJS versions 10.1.3 through 10.1.4 AdonisJS versions 11.0.0-next.9 through 11.0.2 Description An incomplete fix in the @adonisjs/bodyparser module allows for prototype pollution via nested multipart field payloads. While direct payloads a...

Security update for python-python-multipart (important)

openSUSE security update: security update for python-python-multipart ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21066-1 Rating: important References: bsc1268488 bsc1268496 bsc1268500 bsc1268506 Cross-References: CVE-2026-53537 CVE-2026-53538...

CVE-2026-12143

A flaw was found in form-data, a library for creating readable multipart/form-data streams. A remote attacker can exploit this vulnerability by injecting carriage return CR, line feed LF, or double-quote " characters into the field argument of FormDataappend or the filename option. This allows th...

BentoML SSRF Vulnerability in File Upload Processing

DescriptionThere's an SSRF in the file upload processing system that allows remote attackers to make arbitrary HTTP requests from the server without authentication. The vulnerability exists in the serialization/deserialization handlers for multipart form data and JSON requests, which automaticall...

PT-2026-53392

Description There's an SSRF in the file upload processing system that allows remote attackers to make arbitrary HTTP requests from the server without authentication. The vulnerability exists in the serialization/deserialization handlers for multipart form data and JSON requests, which automatical...

EUVD-2026-39945

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 9.2.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated...

PT-2026-51650

Name of the Vulnerable Software and Affected Versions ARForms versions prior to 7.1.4 Description Insufficient input sanitization and output escaping in the ARForms plugin allow unauthenticated attackers to perform Stored Cross-Site Scripting XSS. By exploiting the value parameter of the arf save...