Medium severity · published May 14, 2026
CVE-2026-27680
CSS Injection vulnerability in SAP NetWeaver Application Server ABAP
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
Due to improper input handling under certain conditions, SAP NetWeaver Application Server ABAP allows an attacker to inject custom Cascading Style Sheets (CSS) data into a web page served by the application. When a user accesses or clicks the affected page, the injected CSS is executed. As a result, the issue has a low impact on confidentiality, while integrity and availability are not impacted.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
SAP NetWeaver Application Server ABAP · SAP_SE
SAP_UI 758; 816 · source: vendor
NA
Netweaver Application Server Abap · Sap
758; 816 · source: NVD
Affected product
SN
SAP NetWeaver Application Server ABAP
SAP_SE
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27680
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27680
Permissions Required
https://me.sap.com/notes/3665042
Vendor Advisory
https://url.sap/sapsecuritypatchday
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