CVE-2026-44483
RVF: Prototype pollution in @rvf/set-get reachable via @rvf/core preprocessFormData (HTTP form data)
Description
RVF (formerly Remix Validated Form) provides easy form validation and state management for React. From 6.0.0 to before 6.0.4 and 7.0.2, setPath in @rvf/set-get (used by @rvf/core to flatten incoming form data into a nested object) does not block the keys __proto__, constructor, or prototype when walking a path. Because field names in submitted form data are passed directly to setPath via preprocessFormData (and through parseFormData / validate), an attacker who can submit a form to a Remix / React Router app using the library can set arbitrary properties on Object.prototype of the running server process. This is a default-reachable prototype pollution primitive: no special configuration is required. Any endpoint that accepts a form via parseFormData or runs a validator created with createValidator is affected. This vulnerability is fixed in 6.0.4 and 7.0.2.
INFO
Published Date :
May 27, 2026, 5:16 p.m.
Last Modified :
Oct. 26, 2026, 11:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-44483
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update RVF to version 6.0.4 or later.
- Update RVF to version 7.0.2 or later.
Public PoC/Exploit Available at Github
CVE-2026-44483 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44483.
| URL | Resource |
|---|---|
| https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq | |
| https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44483 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44483
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Vulnerability disclosures and root-cause analysis. 10 published CVEs across npm and WordPress: prototype pollution, broken access control, unauthenticated upload to RCE, and SSRF.
appsec cve prototype-pollution responsible-disclosure security vulnerability-research
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44483 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44483 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: RVF y set-get de airjp73, Description: RVF (anteriormente Remix Validated Form) proporciona una fácil validación de formularios y gestión de estado para React. Desde 6.0.0 hasta antes de 6.0.4 y 7.0.2, setPath en @rvf/set-get (utilizado por @rvf/core para aplanar los datos de formulario entrantes en un objeto anidado) no bloquea las claves __proto__, constructor o prototype al recorrer una ruta. Debido a que los nombres de campo en los datos de formulario enviados se pasan directamente a setPath a través de preprocessFormData (y a través de parseFormData / validate), un atacante que puede enviar un formulario a una aplicación Remix / React Router usando la biblioteca puede establecer propiedades arbitrarias en Object.prototype del proceso del servidor en ejecución. Este es un primitivo de contaminación de prototipos alcanzable por defecto: no se requiere ninguna configuración especial. Cualquier endpoint que acepte un formulario a través de parseFormData o ejecute un validador creado con createValidator se ve afectado. Esta vulnerabilidad se corrige en 6.0.4 y 7.0.2. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'airjp73', 'product': 'rvf', 'versions': [{'status': 'affected', 'version': '>= 7.0.0, < 7.0.2'}, {'status': 'affected', 'version': '>= 6.0.0, < 6.0.4'}]}, {'vendor': '@rvf', 'product': 'set-get', 'versions': [{'status': 'affected', 'version': '>= 7.0.0, < 7.0.2'}, {'status': 'affected', 'version': '>= 6.0.0, < 6.0.4'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-44483', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-27T18:48:27.866654Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 27, 2026
Action Type Old Value New Value Added Reference https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq -
New CVE Received by [email protected]
May. 27, 2026
Action Type Old Value New Value Added Description RVF (formerly Remix Validated Form) provides easy form validation and state management for React. From 6.0.0 to before 6.0.4 and 7.0.2, setPath in @rvf/set-get (used by @rvf/core to flatten incoming form data into a nested object) does not block the keys __proto__, constructor, or prototype when walking a path. Because field names in submitted form data are passed directly to setPath via preprocessFormData (and through parseFormData / validate), an attacker who can submit a form to a Remix / React Router app using the library can set arbitrary properties on Object.prototype of the running server process. This is a default-reachable prototype pollution primitive: no special configuration is required. Any endpoint that accepts a form via parseFormData or runs a validator created with createValidator is affected. This vulnerability is fixed in 6.0.4 and 7.0.2. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L Added CWE CWE-1321 Added Reference https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq