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Vulnerabilities

Security incident · CVE-2026-100358

Admin OS RCE via Dropdown Editor PHP Injection

Published Oct 12, 2026 · catalog updated Oct 12, 2026 · Admin OS RCE via

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Open the advisory

Exploitation likelihood is not on this record for CVE-2026-100358. A missing EPSS score is not a low risk. Compare Admin OS RCE via with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Admin OS RCE via).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Critical—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Not in the current FIRST EPSS dataset
Remediation
Not established
Affected products
See sources for product scope

### Summary An unsafe PHP code injection vulnerability in the Studio Dropdown Editor allows any administrator to achieve persistent OS-level code execution as www-data. The $dropdown_name parameter is passed through html_entity_decode() and written verbatim into a PHP language file that is include()d on every subsequent page load, creating a persistent server-side webshell. ### Impact Any attacker who has gained administrator credentials can achieve persistent, unauthenticated OS-level code execution as www-data on the server. The injected webshell survives reboots and cache clears because it is written to a source file under custom/. Full confidentiality, integrity, and availability of both the application and the underlying host are compromised.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-100358

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    No version range is stored, so an installed version cannot be checked on this page.

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

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

Should you patch?

Exploitation likelihood is not on this record for CVE-2026-100358. A missing EPSS score is not a low risk. Compare Admin OS RCE via with the linked advisory before you change production.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-94: Code Injection. EPSS is absent from the current FIRST dataset. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

SuiteCRM 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. Oct 12, 2026 · Maintainer security tabs

    Detected

    ### Summary An unsafe PHP code injection vulnerability in the Studio Dropdown Editor allows any administrator to achieve persistent OS-level code execution as www-data. The $dropdown_name parameter is passed through html_entity_decode() and written verbatim into a PHP language file that is include()d on every subsequent page load, creating a persistent server-side webshell. ### Impact Any attacker

Sources

  • CVE.orgVulnerability recordCVE-2026-100358

    Official CVE identifier

    cve.org
  • Maintainer security tabsVendor advisoryGHSA-4773-c8fh-3rww

    ### Summary An unsafe PHP code injection vulnerability in the Studio Dropdown Editor allows any administrator to achieve persistent OS-level code execution as www-data. The $dropdown_name parameter is passed through html_entity_decode() and written verbatim into a PHP language file that is include()d on every subsequent page load, creating a persistent server-side webshell. ### Impact Any attacker

    github.com

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 2, 2026
  • Maintainer security tabsNov 1, 2026