Categories
CVE-2026-53634 medium CVSS 4.3

Vulnerability in code16/sharp (CVE-2026-53634)

Summary

Vulnerability in code16/sharp (CVE-2026-53634). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 9.22.3 or later.

Original description

The description as published by the source.

Impact

The create and store endpoints of the Quick Creation Command feature did not enforce any authorization check. An authenticated Sharp user without create permission on a given entity could bypass the authorization layer and either retrieve the creation form or submit new records for that entity, as long as it had a Quick Creation Command handler configured.

Patches

Yes. The fix is included in version 9.22.3. Users should upgrade to that version or later.

Workarounds

Remove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible.

Resources

PR #729

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-2026-53634 has been found in code16/sharp.
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: upgrade code16/sharp to 9.22.3 or later.
If unsure, ask your IT team or search "code16/sharp CVE-2026-53634" on the vendor's site.

CVE-2026-53634 (code16/sharp) — CWE-862 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Patched: 9.22.3 — apply immediately
Workaround: Remove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible.
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-862) exists in code16/sharp.

📍 Affected scope

Check the vendor advisory for the affected versions of code16/sharp.

🔥 Severity

Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 9.22.3.

🛡️ Workaround

Workaround: Remove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'code16/sharp' . 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 'code16/sharp' . | 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 code16/sharp 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 temporary workaround mitigate
    Remove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible.

    パッチが適用されるまでの応急処置として、Remove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch
    Upgrade code16/sharp to 9.22.3

    ステージング環境で 9.22.3 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。

  4. 4
    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

composer code16/sharp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.22.3"}]}]
Packagist code16/sharp
[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.22.3"}]}]

References

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