CVE-2026-66779: CWE-79: Improper Neutralization of Input During Web Page Generation in SAP_SE SAP NetWeaver Application Server ABAP
Due to a Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP, an authenticated attacker could generate a malicious link and make it publicly accessible. If an authenticated victim accesses this link, the injected input is processed and reflected within the DOM on the client side during page rendering, resulting in the execution of malicious content in the victim's browser context. Successful exploitation could result in a high impact to the confidentiality and a low impact to the integrity of the system, while availability remains unaffected.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-66779) in SAP NetWeaver Application Server ABAP arises from improper neutralization of input during web page generation (CWE-79). An authenticated attacker can create a malicious link that, if accessed by an authenticated user, results in reflected XSS where injected input is processed and executed in the victim's browser DOM context. The vulnerability affects versions 755, 756, 757, 758, and 816 of the product. The impact includes high confidentiality loss and low integrity impact, with availability unaffected. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation allows execution of malicious scripts in the context of an authenticated victim's browser, leading to potential confidentiality breaches and limited integrity impact. Availability of the system is not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit exposure by restricting access to affected SAP NetWeaver Application Server ABAP versions and exercising caution with links received from untrusted sources. Monitor SAP advisories for updates.
CVE-2026-66779: CWE-79: Improper Neutralization of Input During Web Page Generation in SAP_SE SAP NetWeaver Application Server ABAP
Description
Due to a Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP, an authenticated attacker could generate a malicious link and make it publicly accessible. If an authenticated victim accesses this link, the injected input is processed and reflected within the DOM on the client side during page rendering, resulting in the execution of malicious content in the victim's browser context. Successful exploitation could result in a high impact to the confidentiality and a low impact to the integrity of the system, while availability remains unaffected.
CVSS v3.1
Score 6.3medium
Affected software
SAP_SE
SAP NetWeaver Application Server ABAP
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-66779) in SAP NetWeaver Application Server ABAP arises from improper neutralization of input during web page generation (CWE-79). An authenticated attacker can create a malicious link that, if accessed by an authenticated user, results in reflected XSS where injected input is processed and executed in the victim's browser DOM context. The vulnerability affects versions 755, 756, 757, 758, and 816 of the product. The impact includes high confidentiality loss and low integrity impact, with availability unaffected. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation allows execution of malicious scripts in the context of an authenticated victim's browser, leading to potential confidentiality breaches and limited integrity impact. Availability of the system is not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit exposure by restricting access to affected SAP NetWeaver Application Server ABAP versions and exercising caution with links received from untrusted sources. Monitor SAP advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- sap
- Date Reserved
- 2026-07-27T17:33:56.950Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7a6fdfbf8831d539db4ba0
Added to database: 08/11/2026, 00:42:07 UTC
Last enriched: 08/11/2026, 00:56:53 UTC
Last updated: 09/23/2026, 01:47:44 UTC
Views: 74
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.