CVE-2026-105861: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in payloadcms payload
Description
Payload is a free and open source headless content management system. In versions after 3.0.0 and before 3.90.0, authenticated external URL-based upload retrieval can forward authentication data to a redirected destination that was not verified as trusted, potentially exposing a valid session to an unintended recipient. This issue is fixed in version 3.90.0.
CVSS v4.0
Score 7.2high
Affected software
payloadcms
payload
pkg:github/payloadcms/payloadRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PayloadCMS, a headless content management system, has a vulnerability (CVE-2026-105861) in versions >3.0.0 and <3.90.0 and also in >4.0.0-canary.0 and <4.0.0-canary-34 where authenticated external URL-based upload retrieval can forward authentication data to a redirected destination that is not verified as trusted. This can lead to exposure of sensitive authentication information to unauthorized actors. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information) and CWE-346 (Origin Validation Error). The issue is resolved in version 3.90.0.
Potential Impact
An attacker could receive authentication data (such as session tokens) forwarded to an untrusted redirected URL, potentially allowing unauthorized access to a valid user session. This exposure could compromise user accounts or sensitive content managed by PayloadCMS.
Mitigation Recommendations
Upgrade PayloadCMS to version 3.90.0 or later, where this vulnerability has been fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T23:06:29.748Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac526892cdf04f656c62a3b
Added to database: 10/06/2026, 16:49:13 UTC
Last enriched: 10/06/2026, 17:03:17 UTC
Last updated: 10/06/2026, 18:57:27 UTC
Views: 14
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