SAP NetWeaver Application Server ABAP up to SAP_UI 754 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k5.29

Summaryinfo

A vulnerability described as problematic has been identified in SAP NetWeaver Application Server ABAP up to SAP_UI 754. Affected is an unknown function. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-66779. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in SAP NetWeaver Application Server ABAP up to SAP_UI 754. It has been rated as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at me.sap.com. This vulnerability is handled as CVE-2026-66779 since 07/27/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/11/2026). The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-55891). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/27/2026 CVE reserved
08/11/2026 +15 days Advisory disclosed
08/11/2026 +0 days VulDB entry created
08/11/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: sap.com

Advisory: me.sap.com
Status: Confirmed

CVE: CVE-2026-66779 (🔒)
GCVE (CVE): GCVE-0-2026-66779
GCVE (VulDB): GCVE-100-387980
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20150716

Entryinfo

Created: 08/11/2026 03:03
Updated: 08/11/2026 03:41
Changes: 08/11/2026 03:03 (52), 08/11/2026 03:41 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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