CVE-2026-34257 Open Redirect vulnerability in SAP NetWeaver Application Server ABAP
An unauthenticated attacker can redirect victims to malicious pages via crafted URLs in SAP NetWeaver Application Server ABAP.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34257?
CVE-2026-34257 is a medium-severity vulnerability in Sap Netweaver Application Server Abap, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated attacker could craft malicious URL that, if accessed by a victim, they could be redirected to the page controlled by the attacker. This causes low impact on confidentiality and integrity of the application with no impact on availability.
Weakness: CWE-601
Which versions are affected by CVE-2026-34257?
It affects 1 product.
Products include Sap Netweaver Application Server Abap.
How do I fix CVE-2026-34257?
No fix has been published for CVE-2026-34257 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-34257 being exploited?
There is no known exploitation of CVE-2026-34257 in the wild and no public exploit code.
Other vulnerabilities in Sap Netweaver Application Server Abap
- CVE-2026-0488 Code Injection vulnerability in SAP CRM and SAP S/4HANA (Scripting Editor)
- CVE-2021-40499 Code injection in SAP NetWeaver Application Server for ABAP (SAP Cloud Print Manager and SAPSprint)
- CVE-2023-27269 Directory Traversal vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform
- CVE-2023-27500 Directory Traversal vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform
- CVE-2023-0014 Capture-replay vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform
Sources
Also known as GHSA-fwjv-3fw4-7x83.