CVE-2026-34256 Missing Authorization check in SAP ERP and SAP S/4 HANA (Private Cloud and On-Premise)
An authenticated attacker can overwrite ABAP reports without authorization, causing denial of service and limited integrity loss in SAP ERP and S/4HANA.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-34256?
CVE-2026-34256 is a high-severity missing authorization vulnerability in SAP_SE SAP ERP and SAP S/4 HANA (Private Cloud and On-Premise), published on 14 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Due to a missing authorization check in SAP ERP and SAP S/4HANA (Private Cloud and On-Premise), an authenticated attacker could execute a particular ABAP report to overwrite any existing eight?character executable ABAP report without authorization. If the overwritten report is subsequently executed, the intended functionality could become unavailable. Successful exploitation impacts availability, with a limited impact on integrity confined to the affected report, while confidentiality remains unaffected.
Weakness: CWE-862
Which versions are affected by CVE-2026-34256?
How do I fix CVE-2026-34256?
No fix has been published for CVE-2026-34256 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-34256 being exploited?
There is no known exploitation of CVE-2026-34256 in the wild and no public exploit code.
Sources
Also known as GHSA-9jcw-cw9q-r69r.