CVE-2026-53634: Code16/sharp Sharp Missing Authorization Check Vulnerability

MODERATE
Advisory Identifier: GHSA-vmwx-m75v-qvch
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CVSS 4.3
CWE-862
Published
Advisory Summary

CVE-2026-53634 is a MODERATE (CVSS 4.3) sharp missing authorization check vulnerability (CWE-862: Missing Authorization) affecting Code16/sharp libraries in the Packagist ecosystem. The issue involves sharp missing authorization check in quick creation command endpoints. Remediation is available by upgrading affected packages to version 9.22.3.

CVE-2026-53634 at a Glance

CVE Identifier CVE-2026-53634
GHSA Identifier GHSA-vmwx-m75v-qvch
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-862: Missing Authorization
Affected Product Code16/sharp
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-53634

To remediate this vulnerability, upgrade all affected Code16/sharp dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

code16/sharp fixed: 9.22.3 
Upgrade code16/sharp to 9.22.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for code16/sharp

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-53634, inspect your project dependencies for Code16/sharp:

inspect dependencies for code16/sharp

Analyze the terminal output to locate any version of Code16/sharp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.22.3), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Code16/sharp, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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](https://github.com/code16/sharp/pull/729)

CVE-2026-53634 Affected Code16/sharp Versions

1 component(s)
Fixed Versions:
9.22.3
Product / Package Ecosystem Affected Versions Fixed Version
code16/sharp
 Packagist
≥ 9.0.0
< 9.22.3
9.22.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/code16/sharp/security/advisories/GHSA-vmwx-m75v-qvch
NVD — CVE-2026-53634 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53634
Code16/sharp Source Repository REPOSITORY
https://github.com/code16/sharp/pull/729
Security Fix Commit FIX COMMIT
https://github.com/code16/sharp/commit/aa18a85fd8fef830988a336cad2278986729d21a
Code16/sharp Source Repository REPOSITORY
https://github.com/code16/sharp
Code16/sharp Release RELEASE
https://github.com/code16/sharp/releases/tag/v9.22.3

Frequently Asked Questions

What is CVE-2026-53634?
CVE-2026-53634 is a security vulnerability in Code16/sharp involving Sharp Missing Authorization Check in Quick Creation Command Endpoints under CWE-862: Missing Authorization.
Which Code16/sharp versions are affected?
Affected versions include releases prior to 9.22.3 across affected packages: code16/sharp.
What version fixes CVE-2026-53634?
Upgrading to 9.22.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is code16/sharp affected?
Yes, code16/sharp is affected in releases prior to 9.22.3. Upgrade your dependency to 9.22.3 or later.
What is the CVSS score of CVE-2026-53634?
CVE-2026-53634 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-53634?
CVE-2026-53634 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Packagist dependencies for CVE-2026-53634?
Run the dependency tree command: 'inspect dependencies for code16/sharp'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vmwx-m75v-qvch",
  "modified" : "2026-07-08T20:24:36Z",
  "published" : "2026-07-08T20:24:36Z",
  "aliases" : [ "CVE-2026-53634" ],
  "summary" : "Sharp Missing Authorization Check in Quick Creation Command Endpoints",
  "details" : "### Impact\nThe 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.\n\n### Patches\nYes. The fix is included in version 9.22.3. Users should upgrade to that version or later.\n\n### Workarounds\nRemove or disable Quick Creation Command handlers (quickCreationCommandHandler()) on any entity list where unauthorized access is a concern, until an upgrade is possible.\n\n### Resources\n[PR #729](https://github.com/code16/sharp/pull/729)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "code16/sharp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.22.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/code16/sharp/security/advisories/GHSA-vmwx-m75v-qvch"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53634"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/code16/sharp/pull/729"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/code16/sharp/commit/aa18a85fd8fef830988a336cad2278986729d21a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/code16/sharp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/code16/sharp/releases/tag/v9.22.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-08T20:24:36Z",
    "nvd_published_at" : "2026-06-10T22:17:01Z"
  }
}