CVE-2026-105861

Payload external upload trust validation issue

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.

Affected

payloadcms · payload

CVSS v4.0 GITHUB

7.2 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v4.0 GitHub

7.2 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS v3.1 NVD

8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS

0.14% chance of exploitation in the next 30 days, 3rd percentile

Published

2026-10-06

Proof-of-concept exploits (2)

• payloadcms/payload/security/advisories/GHSA-pj5h-5q6c-3pfx
• payloadcms/payload/releases/tag/v3.90.045286★ · 2026-10-16

Security advisories

• advisories/GHSA-pj5h-5q6c-3pfx

References

• CVE Record
• NVD entry

Related

• CVE-2022-27952
• CVE-2023-30843
• CVE-2025-4643
• CVE-2025-4644
• CVE-2026-105804
• CVE-2026-105805