CVE-2026-35461
Papra has a Blind Server-Side Request Forgery (SSRF) via Webhook URL
Description
Papra is a minimalistic document management and archiving platform. Prior to 26.4.0, the Papra webhook system allows authenticated users to register arbitrary URLs as webhook endpoints with no validation of the destination address. The server makes outbound HTTP POST requests to registered URLs, including localhost, internal network ranges, and cloud provider metadata endpoints, on every document event. This vulnerability is fixed in 26.4.0.
INFO
Published Date :
April 7, 2026, 3:17 p.m.
Last Modified :
April 24, 2026, 3:29 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Papra to version 26.4.0 or later.
- Validate all registered webhook URLs.
- Restrict webhook destinations if possible.
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-2026-35461.
| URL | Resource |
|---|---|
| https://github.com/papra-hq/papra/security/advisories/GHSA-cjw7-qg95-58mq | Exploit Vendor Advisory |
| https://github.com/papra-hq/papra/security/advisories/GHSA-cjw7-qg95-58mq | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35461 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-2026-35461
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-2026-35461 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-35461 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.
-
Initial Analysis by [email protected]
Apr. 24, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:papra:papra:*:*:*:*:*:*:*:* versions up to (excluding) 26.4.0 Added Reference Type CISA-ADP: https://github.com/papra-hq/papra/security/advisories/GHSA-cjw7-qg95-58mq Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/papra-hq/papra/security/advisories/GHSA-cjw7-qg95-58mq Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 09, 2026
Action Type Old Value New Value Added Reference https://github.com/papra-hq/papra/security/advisories/GHSA-cjw7-qg95-58mq -
New CVE Received by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added Description Papra is a minimalistic document management and archiving platform. Prior to 26.4.0, the Papra webhook system allows authenticated users to register arbitrary URLs as webhook endpoints with no validation of the destination address. The server makes outbound HTTP POST requests to registered URLs, including localhost, internal network ranges, and cloud provider metadata endpoints, on every document event. This vulnerability is fixed in 26.4.0. Added CVSS V3.1 AV:N/AC:L/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-cjw7-qg95-58mq