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Vulnerabilities

Vulnerability · CVE-2026-6433

Improper Control of Generation of Code ('Code Injection')

Published May 11, 2026 · catalog updated Jun 23, 2026 · FlipperCode Custom css-js-php

Patch now

CVE-2026-6433 is in the CISA known-exploited catalog. Confirm FlipperCode Custom css-js-php against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.81%
Remediation
Remediation guidance
Affected products
vendor FlipperCode Custom css-js-php

The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor FlipperCode Custom css-js-phpversion unspecified

How to fix CVE-2026-6433

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-6433 is in the CISA known-exploited catalog. Confirm FlipperCode Custom css-js-php against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.81%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 11, 2026 · NIST NVD

    Detected

    The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

  2. Jun 17, 2026 · NIST NVD

    Updated

    The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

  3. Jun 23, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  4. Jun 23, 2026 · VulnCheck KEV

    Updated

    The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server. Initial-access exploit intelligence.

Sources

  • CVE.orgVulnerability recordCVE-2026-6433

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-6433

    30-day exploitation probability 0.8%

    first.org
  • NIST NVDVulnerability recordCVE-2026-6433

    The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-6433

    The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.