# CVE-2026-105855: Payload didn't enforce field-level password update restrictions

> CVE-2026-105855 (GitHub advisory GHSA-fx49-4h83-wjv9) is a high-severity vulnerability with a CVSS 4.0 base score of 7.6, classed as Improper Access Control (CWE-284), in payload (npm). Affected versions: < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34. It is fixed in 3.90.0 or 4.0.0-canary.34, depending on the release line.

Canonical page: https://cveminer.com/vulnerabilities/CVE-2026-105855

| Field | Value |
| --- | --- |
| CVE | CVE-2026-105855 |
| GHSA | GHSA-fx49-4h83-wjv9 |
| Severity | High |
| CVSS 4.0 | 7.6 `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N` (GitHub Advisory Database) |
| CWE | CWE-284 Improper Access Control |
| EPSS | 0.32% (higher than 23% of CVEs) |
| CISA KEV | Not listed |
| SSVC | exploitation none, automatable no, technical impact total |
| Published | 6 Oct 2026 |
| Modified | 6 Oct 2026 |

## Description

#### Impact

When an auth collection defined a field-level access.update restriction on the password field, the restriction was not enforced on the server correctly.

#### Patches

Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.

## Affected packages

| Package | Ecosystem | PURL | Vulnerable versions | Fixed in |
| --- | --- | --- | --- | --- |
| payload | npm | `pkg:npm/payload` | < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34 | 3.90.0, 4.0.0-canary.34 |

## Fix commits

- Patch: https://github.com/payloadcms/payload/commit/9de9e7911e29d60870a1d5480412524c63d6411e
- Release: https://github.com/payloadcms/payload/commit/e10b60228b92b680663110ea2af431643bfc6126 (3.90.0)

## Questions

**What is the GHSA ID for CVE-2026-105855?**

GitHub tracks CVE-2026-105855 as GHSA-fx49-4h83-wjv9.

**What is the CVSS score of CVE-2026-105855?**

CVE-2026-105855 has a CVSS 4.0 base score of 7.6 (High), vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N.

**Which versions are affected by CVE-2026-105855?**

payload (npm): < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34.

**How do I fix CVE-2026-105855?**

Upgrade to 3.90.0 or 4.0.0-canary.34, depending on the release line. The fix is in commit 9de9e79.

**What is the Package URL (PURL) for CVE-2026-105855?**

The affected package's PURL is pkg:npm/payload.

**Is CVE-2026-105855 exploited in the wild?**

CISA's Known Exploited Vulnerabilities catalog doesn't list CVE-2026-105855. That means no confirmed exploitation has been catalogued, not that it is safe to leave unpatched. CISA's SSVC assessment rates exploitation as "none". EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23% of CVEs.

## References

- https://github.com/payloadcms/payload/commit/9de9e7911e29d60870a1d5480412524c63d6411e (fix)
- https://github.com/payloadcms/payload/security/advisories/GHSA-fx49-4h83-wjv9 (advisory)
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105855.json (advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2026-105855 (advisory)
- https://github.com/advisories/GHSA-fx49-4h83-wjv9 (advisory)
- https://github.com/payloadcms/payload (package)
- https://github.com/payloadcms/payload/releases/tag/v3.90.0

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Source: CVEminer (https://cveminer.com/vulnerabilities/CVE-2026-105855), compiled from OSV (GitHub advisory), GitHub Advisory Database, OSV (CVE record), CVE.org, CISA KEV catalog. OSV and GitHub Advisory Database content is licensed CC BY 4.0.