CVE-2026-66778Network attack vector

Information disclosure via unsanitized forwarded headers

Published Aug 11, 2026 · Updated Aug 11, 2026

HTTP header neutralization in SAP Business AI Platform (Approuter) before 23.0.0 allows remote attackers to read limited information. The request-forwarding path passes certain attacker-controlled headers to internal components without sufficient sanitization. No authentication or user interaction is required, and the documented consequence is limited unauthorized information access without modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP header neutralization in SAP Business AI Platform (Approuter) before 23.0.0 allows remote attackers to read limited information. The request-forwarding path passes certain attacker-controlled headers to internal components without sufficient sanitization. No authentication or user interaction is required, and the documented consequence is limited unauthorized information access without modification or service interruption.

The record

CVE
CVE-2026-66778
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
SAP SE
Product
SAP Business AI Platform (Approuter)
Classifications
CWE-644, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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.

  1. Affected versionversion=SAP Approuter node.js package < 23.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP Business AI Platform (Approuter)version=SAP Approuter node.js package < 23.0.0

Published CVSS scores

5.3SAP SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-644Improper Neutralization of HTTP Headers for Scripting Syntax
T1190Exploit Public-Facing Application

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

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Your stack

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