CVE-2026-40137Network attack vector

Browser data exposure via crafted malicious links

Published May 12, 2026 · Updated May 12, 2026

Cross-site scripting in SAP TAF_APPLAUNCHER ST-PI 740 and 758 allows remote attackers to redirect users via crafted links. SAP has not disclosed the affected request parameter or how TAF_APPLAUNCHER fails to neutralize it before generating the redirect. Exploitation requires a victim to click the link and is limited to browser data exposure or alteration, with no application availability impact.

CVSS severity6.1
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in SAP TAF_APPLAUNCHER ST-PI 740 and 758 allows remote attackers to redirect users via crafted links. SAP has not disclosed the affected request parameter or how TAF_APPLAUNCHER fails to neutralize it before generating the redirect. Exploitation requires a victim to click the link and is limited to browser data exposure or alteration, with no application availability impact.

The record

CVE
CVE-2026-40137
Published
May 12, 2026
Updated
May 12, 2026
Vendor
cap-js
Product
Business Server Pages Application (TAF_APPLAUNCHER)
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=758
  2. Affected versionversion=ST-PI 740

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

cap-js · Business Server Pages Application (TAF_APPLAUNCHER)version=758; version=ST-PI 740

Published CVSS scores

6.1SAP SECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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