CVE-2026-66771
Cross Site Scripting (XSS) vulnerability in SAPUI5
Description
SAPUI5 allows a key user with content adaptation privileges to inject malicious script content into persisted application changes. When another user subsequently opens the adapted application, the injected script executes in the victim's browser session. Successful exploitation could allow the attacker to access sensitive session data and perform unauthorized actions on behalf of the victim, resulting in a high impact on confidentiality and integrity. There is no impact on availability.
INFO
Published Date :
Aug. 11, 2026, 1:17 a.m.
Last Modified :
Aug. 11, 2026, 1:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | e4686d1a-f260-4930-ac4c-2f5c992778dd | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Restrict content adaptation privileges.
- Sanitize all user-provided input.
- Update SAPUI5 to the latest secure version.
- Implement input validation for persisted changes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-66771.
| URL | Resource |
|---|---|
| https://me.sap.com/notes/3772071 | |
| https://url.sap/sapsecuritypatchday |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-66771 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-66771
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-66771 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-66771 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 11, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SAP_SE', 'product': 'SAPUI5', 'versions': [{'status': 'affected', 'version': 'SAP_UI 750'}, {'status': 'affected', 'version': '754'}, {'status': 'affected', 'version': '755'}, {'status': 'affected', 'version': '756'}, {'status': 'affected', 'version': '757'}, {'status': 'affected', 'version': '758'}, {'status': 'affected', 'version': '816'}, {'status': 'affected', 'version': 'UI_700 200'}], 'defaultStatus': 'unaffected'}] Added Description SAPUI5 allows a key user with content adaptation privileges to inject malicious script content into persisted application changes. When another user subsequently opens the adapted application, the injected script executes in the victim's browser session. Successful exploitation could allow the attacker to access sensitive session data and perform unauthorized actions on behalf of the victim, resulting in a high impact on confidentiality and integrity. There is no impact on availability. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-79 Added Reference https://me.sap.com/notes/3772071 Added Reference https://url.sap/sapsecuritypatchday