What is CVE-2026-34257?

CVE-2026-34257 is a medium-severity vulnerability in Sap Netweaver_application_server_abap, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-04-14.

How severe is CVE-2026-34257?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Sap Netweaver_application_server_abap

CVE-2026-34257

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 caus…

Vulnerability class: Open Redirect

EPSS: 0.001 (22.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Sap Netweaver_application_server_abap — versions 700, 701, 702
Sap_se Sap Netweaver Application Server Abap — versions SAP_BASIS 700, SAP_BASIS 701, SAP_BASIS 702

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

cna@sap.com (Permissions Required)
cna@sap.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-34257?: CVE-2026-34257 is a medium-severity vulnerability in Sap Netweaver_application_server_abap, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-04-14.
How severe is CVE-2026-34257?: Medium severity. CVSS v3 base score is 6.1 out of 10.