CVE-2026-58239: SAP Approuter does not sufficiently validate tenant context in inbound requests

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-58239 is a low-severity flaw (CVSS 3.7) affecting approuter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SAP Approuter does not sufficiently validate tenant context in inbound requests. An unauthenticated attacker could send specially crafted requests to spoof the tenant context under conditions not fully within their control. Successful exploitation could allow limited access to another tenant's information, resulting in a low impact on confidentiality. There is no impact on integrity and availability.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-807
Published	2026-08-11
Last modified	2026-10-24

Publisher (CNA): SAP SE · Vendor: sap

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 01:17 UTCPublished CVE record published
2026-10-24 16:10 UTCUpdated Record last modified

sap approuter UPGRADE

Affected: < 23.0.0

Fixed in: 23.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls approuter

2. UPGRADE to 23.0.0

npm install approuter@">=23.0.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-58239?

approuter: upgrade to 23.0.0. Exact commands for each OS are on this page.

Is CVE-2026-58239 being exploited?

CVE-2026-58239 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-58239 affect?

CVE-2026-58239 affects approuter. Severity is low (CVSS 3.7). SAP Approuter does not sufficiently validate tenant context in inbound requests. An unauthenticated attacker could send specially crafted requests to spoof the tenant context under conditions not fully within their control. Successful explo

How urgent is CVE-2026-58239?

Priority 25/100. Remotely exploitable, no login, no user action

Software pages

SAP vulnerabilities

Related CVEs

CVE-2026-58230 HIGH 7.0 UPGRADE SAP Approuter does not sufficiently validate certain token content under specific configurations
CVE-2026-58238 MEDIUM 5.9 UPGRADE SAP Approuter does not sufficiently handle certain requests under specific conditions
CVE-2026-66778 MEDIUM 5.3 UPGRADE SAP Approuter does not sufficiently sanitize certain request headers before forwarding traffic to internal com
CVE-2026-66777 MEDIUM 5.9 UPGRADE SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to backend desti
CVE-2026-58237 MEDIUM 5.9 UPGRADE WebSocket of SAP Approuter does not perform sufficient authorization checks in certain functionality

References

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