CVE-2026-58234Network attack vector

Service degradation via recursive XML entity expansion

Published Sep 8, 2026 · Updated Sep 8, 2026

XML entity expansion in SAP Process Integration (SOAP Adapter) 7.50 allows remote authenticated users to degrade system responsiveness. The adapter processes deeply nested entity definitions in crafted SOAP requests without adequately restricting recursive expansion, temporarily increasing processor load. A privileged messaging user and conditions that trigger costly expansion are required; exploitation interrupts responsiveness without reading or changing data.

CVSS severity2.2
Low
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

XML entity expansion in SAP Process Integration (SOAP Adapter) 7.50 allows remote authenticated users to degrade system responsiveness. The adapter processes deeply nested entity definitions in crafted SOAP requests without adequately restricting recursive expansion, temporarily increasing processor load. A privileged messaging user and conditions that trigger costly expansion are required; exploitation interrupts responsiveness without reading or changing data.

The record

CVE
CVE-2026-58234
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
SAP SE
Product
SAP Process Integration (SOAP Adapter)
Classifications
CWE-776, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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=MESSAGING 7.50
  2. Affected versionversion=SAP_XIAF 7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SAP SE · SAP Process Integration (SOAP Adapter)version=MESSAGING 7.50; version=SAP_XIAF 7.50

Published CVSS scores

2.2SAP SECVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
T1499.004Application or System Exploitation

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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