CVE-2026-105863
criticalpriority · track · 38EPSS 0.004 · 31 %ileUSEPSS · scored 2026-10-27
Payload is a free and open source headless content management system. In versions after 3.0.0 and before 3.90.0, a custom field option that maps a field to a reserved authentication claim name can place unintended values in the authentication token issued at login. This issue is fixed in version 3.90.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.2–9.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-66wr-7vmr-p5jqPayload authentication token field handling issue2026-10-07ghsa · osvUS
### Impact Under certain field configurations, Payload could include unintended values in the authentication token issued at login. You are affected if: - You use an affected Payload version and have configured a custom field option that maps a field to a reserved authentication claim name. ### Patches Payload now restricts which field configuration options can influence the contents of the authentication token. Users should upgrade payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`. ### Workarounds There is no complete workaround. Users should upgrade payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.
sources
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references (3) nvd
External citations — patches, advisories, analysis.
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