CVE-2026-48051
Papra: SSRF via HTTP redirect bypass in webhook delivery
Description
Papra is a minimalistic document management and archiving platform. Prior to version 26.5.0, Papra's webhook delivery system contains an SSRF protection bypass that allows any authenticated organisation member to cause the server to make HTTP requests to internal addresses — loopback, link-local, and RFC-1918 ranges. The SSRF protection validates the registered webhook URL but ignores redirect destinations. The HTTP client (ofetch) follows 3xx responses automatically, and the redirect target is never checked against the blocklist. An attacker registers a webhook pointing to an attacker-controlled server, which redirects incoming POSTs to any internal address. Exploitation was confirmed by live test against the official Docker image. The fix is a single-line change to the webhook HTTP client. This issue has been patched in version 26.5.0.
INFO
Published Date :
July 27, 2026, 6:16 p.m.
Last Modified :
Oct. 24, 2026, 1:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | MITRE-CVE |
Solution
- Update Papra to version 26.5.0.
- Verify webhook URL validation includes redirect destinations.
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-2026-48051.
| URL | Resource |
|---|---|
| https://github.com/papra-hq/papra/security/advisories/GHSA-5g86-85rp-f9hx | |
| https://github.com/papra-hq/papra/security/advisories/GHSA-5g86-85rp-f9hx |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-48051 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-2026-48051
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-48051 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-48051 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. 24, 2026
Action Type Old Value New Value Added Translation Title: papra de papra-hq, Description: Papra es una plataforma minimalista de gestión y archivo de documentos. Antes de la versión 26.5.0, el sistema de entrega de webhooks de Papra contiene un bypass de protección SSRF que permite a cualquier miembro autenticado de la organización hacer que el servidor realice solicitudes HTTP a direcciones internas - rangos de loopback, link-local y RFC-1918. La protección SSRF valida la URL del webhook registrado pero ignora los destinos de redirección. El cliente HTTP (ofetch) sigue las respuestas 3xx automáticamente, y el objetivo de redirección nunca se verifica contra la lista de bloqueo. Un atacante registra un webhook apuntando a un servidor controlado por el atacante, que redirige las solicitudes POST entrantes a cualquier dirección interna. La explotación fue confirmada mediante una prueba en vivo contra la imagen oficial de Docker. La solución es un cambio de una sola línea en el cliente HTTP del webhook. Este problema ha sido parcheado en la versión 26.5.0. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 28, 2026
Action Type Old Value New Value Added Reference https://github.com/papra-hq/papra/security/advisories/GHSA-5g86-85rp-f9hx Added SSVC {'id': 'CVE-2026-48051', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-28T14:52:41.540495Z'} -
New CVE Received by [email protected]
Jul. 27, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'papra-hq', 'product': 'papra', 'versions': [{'status': 'affected', 'version': '< 26.5.0'}]}] Added Description Papra is a minimalistic document management and archiving platform. Prior to version 26.5.0, Papra's webhook delivery system contains an SSRF protection bypass that allows any authenticated organisation member to cause the server to make HTTP requests to internal addresses — loopback, link-local, and RFC-1918 ranges. The SSRF protection validates the registered webhook URL but ignores redirect destinations. The HTTP client (ofetch) follows 3xx responses automatically, and the redirect target is never checked against the blocklist. An attacker registers a webhook pointing to an attacker-controlled server, which redirects incoming POSTs to any internal address. Exploitation was confirmed by live test against the official Docker image. The fix is a single-line change to the webhook HTTP client. This issue has been patched in version 26.5.0. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N Added CWE CWE-918 Added Reference https://github.com/papra-hq/papra/security/advisories/GHSA-5g86-85rp-f9hx