# Important Photon OS Security Update

## Summary
  
Advisory Id     : PHSA-2026-4.0-1051
  
Type            : Security
  
Severity        : ['Important', 'Moderate']
  
Issue date      : 2026-07-06
  
Affected Release: 4.0

## Details
  
Updates of ['rubygem-nokogiri'] packages of Photon OS have been released.
## Affected Packages

### Important
  
rubygem-nokogiri - ['[CVE-2026-57435](https://nvd.nist.gov/vuln/detail/CVE-2026-57435)', '[CVE-2026-57236](https://nvd.nist.gov/vuln/detail/CVE-2026-57236)', '[BDSA-2026-15945](https://nvd.nist.gov/vuln/detail/BDSA-2026-15945)', '[CVE-2026-57235](https://nvd.nist.gov/vuln/detail/CVE-2026-57235)']

### Moderate
  
rubygem-nokogiri - ['[CVE-2026-57438](https://nvd.nist.gov/vuln/detail/CVE-2026-57438)', '[CVE-2026-57437](https://nvd.nist.gov/vuln/detail/CVE-2026-57437)']

## Solution
  
Update the affected packages (tdnf update package)

## Updated Packages Information
  
rubygem-nokogiri-1.13.6-4.ph4.x86_64.rpm | size : 6.7M , sha256 : 5007c2b5cf0c2e175f7df3b341c9971eaaf51ce51320765047d68f10939a0361 , build time : Mon, 06 Jul 2026 09:50:37 UTC