# CVE-2026-27682: SAP NetWeaver AS ABAP reflected XSS in Business Server Pages

Source: https://junglewise.ai/threats/cve-2026-27682-sap-netweaver-as-abap-reflected-xss-in-business-server-pages  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-06-03  
License: CC BY 4.0 with a link back

CVE-2026-27682 · Severity: medium · CVSS 4.7 · Published 2026-05-12

SAP NetWeaver Application Server ABAP is a foundational platform for running SAP business applications. A security vulnerability in its web-based components allows an attacker to trick a user into clicking a malicious link, which then executes unauthorized scripts in the user's browser. This could allow an attacker to view or modify sensitive information within the user's session, potentially compromising business data or user accounts.

Technologies: [SAP NetWeaver Application Server ABAP](https://junglewise.ai/threats/technologies/netweaver-application-server-abap). Vendors: [SAP](https://junglewise.ai/threats/vendors/sap).

## Quick answers

**Is CVE-2026-27682 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27682 being exploited in the wild.

**How severe is CVE-2026-27682?** Medium severity, with a CVSS score of 4.7, published 12 May 2026.

**Which products and versions are affected?** SAP NetWeaver Application Server ABAP 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, 758, 816, 918.

**Is there a fix for CVE-2026-27682?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-27682 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-27682?** Check whether you run SAP NetWeaver Application Server ABAP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A reflected cross-site scripting (XSS) vulnerability exists in SAP NetWeaver Application Server ABAP within applications based on Business Server Pages (BSP). The flaw stems from improper neutralization of input in an unprotected URL parameter. An unauthenticated remote attacker can exploit this by crafting a malicious URL and enticing a victim to click it. Upon interaction, the malicious script is reflected back and executed within the context of the victim's browser session. This allows for the unauthorized access or modification of application data (impacting confidentiality and integrity), though it does not directly affect service availability. SAP has released security notes (e.g., 3728690) to address this issue.

## Affected products

- SAP NetWeaver Application Server ABAP (Business Server Pages) 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, 758, 816, 918

## Timeline

- 2026-05-12: advisory: Initial disclosure by SAP and NVD
- 2026-06-03: other: NVD analysis and CPE information added

## References

- [https://me.sap.com/notes/3728690](https://me.sap.com/notes/3728690)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)

## Related threats

- [SAP Web Dispatcher and NetWeaver Application Server ABAP CSRF in administrative functionality](https://junglewise.ai/threats/cve-2026-89119-sap-web-dispatcher-and-sap-netweaver-application-server-abap)
- [SAP NetWeaver Application Server ABAP memory corruption denial of service](https://junglewise.ai/threats/cve-2026-76970-due-to-a-memory-corruption-vulnerability-in-application-server)
- [SAP NetWeaver Application Server ABAP authorization bypass](https://junglewise.ai/threats/cve-2026-76965-sap-netweaver-application-server-abap-and-abap-platform-does-not)
- [SAP NetWeaver Application Server ABAP memory corruption](https://junglewise.ai/threats/cve-2026-76964-sap-netweaver-application-server-abap-does-not-sufficiently)
- [SAP NetWeaver Application Server ABAP memory disclosure](https://junglewise.ai/threats/cve-2026-109796-sap-netweaver-application-server-abap-and-abap-platform-does-not)