Patchfirst
CVE-2026-89107 Critical · 9.9 EPSS 0.5%

SAP S/4HANA (Manage Substitution/Validation Rules) does not sufficiently validate input processed by rule definition…

SAP_SE · SAP S/4HANA (Manage Substitution/Validation Rules)

Summary

SAP S/4HANA's Manage Substitution/Validation Rules functionality fails to adequately validate input processed by its rule definition feature, which uses a domain-specific scripting language. An authenticated attacker holding specific business privileges can submit crafted input that the rule processing logic interprets as executable ABAP code, enabling arbitrary code execution and full compromise of the affected system over the network with no user interaction required.

Official description · NVD

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.

Breakdown
17.4 / 100
Exploited
Not confirmed
Reports
0
Tactics
0/15

Disclosed on 13 Oct 2026. No public exploit code or confirmed exploitation is recorded.

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

What security researchers reported

Not named in any threat report yet

Also mentioned in 8 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

2 links, grouped by NVD tag
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