CVE-2026-27690 json
HTTP Request Smuggling in SAP Approuter
published 2026-07-14 3 mo ago modified 2026-10-24 15 d ago also GHSA-8m85-wqg7-c529 , EUVD-2026-43584
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.
Patch / fix
- npm @sap/approuter 20.10.0
- sap approuter 20.10.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @sap/approuter | <20.10.0 |
20.10.0 |
Affected products
- SAP_SE SAP Approuter
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
References
-
url.sap
/sapsecuritypatchday
web, vendor-advisory
-
me.sap.com
/notes/3720138
web, permissions-required
-
nvd.nist.gov
/vuln/detail/CVE-2026-27690
advisory
Sources
- CVE List CVE-2026-27690
- GitHub Advisory GHSA-8m85-wqg7-c529
- NVD CVE-2026-27690
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