Unauthorized access via unvalidated OAuth2 request headers
Published Jul 14, 2026 · Updated Jul 14, 2026
Open redirect in SAP Application Router before 21.2.0 allows remote attackers to gain unauthorized access through a victim-clicked link. During the OAuth2 login flow under affected configurations, the router insufficiently validates incoming request headers before forming an untrusted redirect; SAP has not publicly identified the specific headers or configurations. No authentication is required to create the link, but a victim must click it; successful exploitation compromises application confidentiality and integrity without interrupting service.
Summary
What happened
Open redirect in SAP Application Router before 21.2.0 allows remote attackers to gain unauthorized access through a victim-clicked link. During the OAuth2 login flow under affected configurations, the router insufficiently validates incoming request headers before forming an untrusted redirect; SAP has not publicly identified the specific headers or configurations. No authentication is required to create the link, but a victim must click it; successful exploitation compromises application confidentiality and integrity without interrupting service.
The record
- CVE
- CVE-2026-44745
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- cap-js
- Product
- SAP Application Router
- Classifications
- CWE-601, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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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 < 21.2.0
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.
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Technologies
Your stack
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Your stack
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