CVE intelligence and bounded remediation

CVE-2020-26835 — Sap Netweaver Application Server Abap security vulnerability

Medium CVSS 6.1

SAP NetWeaver AS ABAP, versions - 740, 750, 751, 752, 753, 754 , does not sufficiently encode URL which allows an attacker to input malicious java script in the URL which could be executed in the browser resulting in Reflected Cross-Site Scripting (XSS) vulnerability.

Severity
Medium
CVSS
6.1 (3.1)
Published
2020-12-09
CISA KEV
Not currently listed
Ecosystem
java/maven
Weaknesses
CWE-79

Affected products

  • sap / netweaver_application_server_abap / 740
  • sap / netweaver_application_server_abap / 750
  • sap / netweaver_application_server_abap / 751
  • sap / netweaver_application_server_abap / 752
  • sap / netweaver_application_server_abap / 753
  • sap / netweaver_application_server_abap / 754

Matched remediation archetype

Cross-site scripting and unsafe browser output

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Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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