Categories
CVE-2026-105866 high CVSS 7.5

Vulnerability in payload (CVE-2026-105866)

Summary

Vulnerability in payload (CVE-2026-105866). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 4.0.0-canary.34 or later.

Original description

The description as published by the source.

Impact

An unauthenticated attacker who knows an account’s email address or username could trigger Payload’s account lockout mechanism and prevent that user from signing in.

You are affected if:

  • Using an affected Payload version with an auth-enabled collection that uses local authentication and account lockout.

Applications that do not use Payload local authentication are not affected.

Patches

Successful password resets now clear the account’s lockout state. The forgot-password flow also enforces a configurable minimum interval between reset emails, which defaults to 15 seconds.

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

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-105866 has been found in payload.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade payload to 4.0.0-canary.34 or later.
If unsure, ask your IT team or search "payload CVE-2026-105866" on the vendor's site.

CVE-2026-105866 (payload) — CWE-307 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 4.0.0-canary.34 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-307) exists in payload.

📍 Affected scope

Check the vendor advisory for the affected versions of payload.

🔥 Severity

Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 4.0.0-canary.34.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'payload' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify
    grep -r 'payload' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で payload を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch
    Upgrade payload to 4.0.0-canary.34

    ステージング環境で 4.0.0-canary.34 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

npm payload
[{"type":"SEMVER","events":[{"introduced":"4.0.0-canary.0"},{"fixed":"4.0.0-canary.34"}]}]

References

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