---
id: CVE-2026-89107
title: >-
  SAP S/4HANA (Manage Substitution/Validation Rules) does not sufficiently
  validate input processed by rule definition functionality that utilizes a
  domain-specific scripting language
summary: >-
  SAP S/4HANA (Manage Substitution/Validation Rules) does not sufficiently
  validate input processed by rule definition functionality that utilizes a
  domain-specific scripting language. An authenticated attacker with specific
  business privi…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-94
vendor: SAP_SE
product: SAP S/4HANA (Manage Substitution/Validation Rules)
affected:
  - sap_s_4hana_manage_substitution_validation_rules S4CORE 105
  - sap_s_4hana_manage_substitution_validation_rules 106
  - sap_s_4hana_manage_substitution_validation_rules 107
  - sap_s_4hana_manage_substitution_validation_rules 108
  - sap_s_4hana_manage_substitution_validation_rules 109
published: '2026-10-13'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T20:38:04.303'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89107'
references:
  - url: 'https://me.sap.com/notes/3805589'
    label: cna@sap.com
  - url: 'https://url.sap/sapsecuritypatchday'
    label: cna@sap.com
tags:
  - nvd
  - cve.org
epss: 0.00481
epssPercentile: 0.41266
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T00:00:00+00:00'
ingestedAt: '2026-10-13T02:12:00.761Z'
---

## Overview

SAP S/4HANA (Manage Substitution/Validation Rules) does not sufficiently validate input processed by rule definition functionality that utilizes a domain-specific scripting language. An authenticated attacker with specific business privileges could submit specially crafted input, which is interpreted as executable ABAP code by the rule processing logic. Successful exploitation could allow the attacker to execute ABAP arbitrary code into the system, resulting in full compromise of the affected system and high impact on confidentiality, integrity, and availability of the system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.