CVE-2026-105858
Payload: Remote Code Execution through first-register
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Payload: Remote Code Execution through first-register
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
- Record
CVE-2026-105858- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94, CWE-1321
- Updated
- 2026-11-02
EUVDEUVD-2026-93502
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
- Record
EUVD-2026-93502- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-97rh-rhh2-7vjv
Payload: Remote Code Execution through first-register
Impact
A crafted request to the public first-register operation can be used to perform a RCE exploit.
You are affected if:
- You use local auth strategy and your application remains without an initial user created
Patches
In the patched version data submission to create first user is properly sanitized.
Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34.
- Record
GHSA-97rh-rhh2-7vjv- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94, CWE-1321
- Updated
- 2026-11-02
NVD
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
- Record
CVE-2026-105858- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94, CWE-1321
- Updated
- 2026-11-02
OSV
Payload: Remote Code Execution through first-register
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
- Record
CVE-2026-105858- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-1321, CWE-94
- Updated
- 2026-11-02
OSVGHSA-97rh-rhh2-7vjv
Payload: Remote Code Execution through first-register
Impact
A crafted request to the public first-register operation can be used to perform a RCE exploit.
You are affected if:
- You use local auth strategy and your application remains without an initial user created
Patches
In the patched version data submission to create first user is properly sanitized.
Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34.
- Record
GHSA-97rh-rhh2-7vjv- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-1321, CWE-94
- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-105858 is a high vulnerability (CVSS 8.1) in Payloadcms Payload, published October 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 41st percentile. Fixed in payload 3.90.0.
References
github.com/payloadcms/payload/security/advisories/GHSA-97rh-rhh2-7vjv
nvd.nist.gov/vuln/detail/CVE-2026-105858