Reflected Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applications based on Business Server Pages)

published 2026-05-12 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29370

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits: 0; none known

Due to a reflected cross-site scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applications based on Business Server Pages), an unauthenticated attacker could craft a URL that exploits an unprotected URL parameter to embed a malicious script. If a victim clicks the link, the injected input is processed during web page generation, resulting in the execution of malicious content in the victim�s browser context. This could allow the attacker to access and/or modify information, impacting the confidentiality and integrity of the application, with no impact to availability.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-12)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

SAP_SE SAP NetWeaver Application Server ABAP (Applications based on Business Server Pages)

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

url.sap /sapsecuritypatchday
vendor-advisory
me.sap.com /notes/3728690
permissions-required

Sources

CVE List CVE-2026-27682
NVD CVE-2026-27682

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Summary