CVE-2026-27680Network attack vector

Limited data exposure via injected page CSS

Published May 14, 2026 · Updated May 14, 2026

CSS injection in SAP NetWeaver Application Server ABAP SAP_UI 758 and 816 allows remote attackers to expose limited data through crafted CSS. Under certain undisclosed conditions, the server places attacker-controlled CSS into a served web page without adequate input handling; SAP has not identified the affected request or code locus. Exploitation requires a user to access or click the affected page, and the reported consequence is limited confidentiality loss without data modification or service interruption.

CVSS severity3.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSS injection in SAP NetWeaver Application Server ABAP SAP_UI 758 and 816 allows remote attackers to expose limited data through crafted CSS. Under certain undisclosed conditions, the server places attacker-controlled CSS into a served web page without adequate input handling; SAP has not identified the affected request or code locus. Exploitation requires a user to access or click the affected page, and the reported consequence is limited confidentiality loss without data modification or service interruption.

The record

CVE
CVE-2026-27680
Published
May 14, 2026
Updated
May 14, 2026
Vendor
cap-js
Product
SAP NetWeaver Application Server ABAP
Classifications
CWE-276, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 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.

  1. Affected versionversion=816
  2. Affected versionversion=SAP_UI 758

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

cap-js · SAP NetWeaver Application Server ABAPversion=816; version=SAP_UI 758

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1SAPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1190Exploit Public-Facing Application

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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