CVE-2026-44745: SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain c

Routine

HIGH 8.1UPGRADE

CVE-2026-44745 is a high-severity flaw (CVSS 8.1) affecting approuter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain configurations. This allows an unauthenticated remote attacker to craft a malicious link which, when clicked by a victim, could lead to unauthorized access. Successful exploitation results in a high impact to the confidentiality and integrity with no impact on the availability of the application.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-601
Published	2026-07-14
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

2026-07-14 01:16 UTCPublished CVE record published
2026-10-24 22:10 UTCUpdated Record last modified

sap approuter UPGRADE

Affected: < 21.2.0

Fixed in: 21.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls approuter

2. UPGRADE to 21.2.0

npm install approuter@">=21.2.0"

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-2026-44745?

approuter: upgrade to 21.2.0. Exact commands for each OS are on this page.

Is CVE-2026-44745 being exploited?

CVE-2026-44745 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-2026-44745 affect?

CVE-2026-44745 affects approuter. Severity is high (CVSS 8.1). SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain configurations. This allows an unauthenticated remote attacker to craft a malicious link which, when clicked by a victim, could lea

How urgent is CVE-2026-44745?

Priority 38/100. High severity

Software pages

SAP vulnerabilities

Related CVEs

CVE-2026-27690 CRITICAL 9.1 UPGRADE Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a spec
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

References

← Back to latest CVEs