Session context hijacking via unchecked request headers
Published Aug 11, 2026 · Updated Aug 11, 2026
Improper header integrity verification in SAP Approuter before 23.0.0 allows remote authenticated users to load another user's session context. Certain session-related request headers are not consistently covered by an integrity check, so crafted values select a different user's session context. Exploitation requires low privileges and prior out-of-band observation of matching session values; it exposes session data and permits limited changes without interrupting service.
Summary
What happened
Improper header integrity verification in SAP Approuter before 23.0.0 allows remote authenticated users to load another user's session context. Certain session-related request headers are not consistently covered by an integrity check, so crafted values select a different user's session context. Exploitation requires low privileges and prior out-of-band observation of matching session values; it exposes session data and permits limited changes without interrupting service.
The record
- CVE
- CVE-2026-66776
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- SAP SE
- Product
- SAP Business AI Platform (Approuter)
- Classifications
- CWE-347, T1550.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=SAP Approuter node.js package < 23.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo