CVE-2026-35461: CWE-918: Server-Side Request Forgery (SSRF) in papra-hq papra
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.
AI Analysis
Technical Summary
CVE-2026-35461 is a Server-Side Request Forgery (SSRF) vulnerability in the papra document management platform's webhook system before version 26.4.0. Authenticated users can register arbitrary webhook URLs without validation, allowing the server to send HTTP POST requests to any URL, including localhost, internal network addresses, and cloud provider metadata endpoints. This can potentially expose sensitive internal resources or metadata. The vulnerability is fixed in papra version 26.4.0.
Potential Impact
The vulnerability allows authenticated users to cause the papra server to make HTTP POST requests to arbitrary URLs, including internal network resources and cloud metadata endpoints. This can lead to information disclosure or interaction with internal services that are otherwise inaccessible externally. The CVSS score of 5 indicates a medium severity impact, with limited confidentiality impact and no integrity or availability impact reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Upgrade papra to version 26.4.0 or later, where this SSRF vulnerability is fixed. Since the vulnerability is resolved in this version, no additional mitigation is required beyond applying the official update. Patch status is confirmed fixed in version 26.4.0.
CVE-2026-35461: CWE-918: Server-Side Request Forgery (SSRF) in papra-hq papra
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35461 is a Server-Side Request Forgery (SSRF) vulnerability in the papra document management platform's webhook system before version 26.4.0. Authenticated users can register arbitrary webhook URLs without validation, allowing the server to send HTTP POST requests to any URL, including localhost, internal network addresses, and cloud provider metadata endpoints. This can potentially expose sensitive internal resources or metadata. The vulnerability is fixed in papra version 26.4.0.
Potential Impact
The vulnerability allows authenticated users to cause the papra server to make HTTP POST requests to arbitrary URLs, including internal network resources and cloud metadata endpoints. This can lead to information disclosure or interaction with internal services that are otherwise inaccessible externally. The CVSS score of 5 indicates a medium severity impact, with limited confidentiality impact and no integrity or availability impact reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Upgrade papra to version 26.4.0 or later, where this SSRF vulnerability is fixed. Since the vulnerability is resolved in this version, no additional mitigation is required beyond applying the official update. Patch status is confirmed fixed in version 26.4.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-02T19:25:52.193Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d51c3baaed68159a2c14f8
Added to database: 4/7/2026, 3:01:15 PM
Last enriched: 4/15/2026, 12:30:36 PM
Last updated: 5/23/2026, 3:42:35 AM
Views: 38
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