How severe is CVE-2026-44745?

CVE-2026-44745 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-44745 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44745?

CVE-2026-44745 affects Sap Approuter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44745?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-44745 published?

CVE-2026-44745 was published on 2026-07-14 and last updated on 2026-09-08.

CVE-2026-44745

CVE-2026-44745 is a high-severity vulnerability in Sap Approuter with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Sap Approuter
Published: 2026-07-14
Last modified: 2026-09-08

Description

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.

Frequently asked questions

What is CVE-2026-44745?: 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.
How severe is CVE-2026-44745?: CVE-2026-44745 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-44745 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44745?: CVE-2026-44745 affects Sap Approuter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44745?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-44745 published?: CVE-2026-44745 was published on 2026-07-14 and last updated on 2026-09-08.

References

Affected products (1)

cpe:2.3:a:sap:approuter:*:*:*:*:*:node.js:*:*

More vulnerabilities in Sap Approuter

CVE-2026-27690 — Critical (CVSS 9.1): Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially…
CVE-2026-58230 — High (CVSS 7.0): SAP Approuter does not sufficiently validate certain token content under specific configurations. An unauthenticated…
CVE-2026-66760 — Medium (CVSS 6.4): SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low…
CVE-2026-66777 — Medium (CVSS 5.9): SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to backend destinations.…
CVE-2026-66776 — Medium (CVSS 5.9): SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under…
CVE-2026-58238 — Medium (CVSS 5.9): SAP Approuter does not sufficiently handle certain requests under specific conditions. An unauthenticated attacker…

All CVEs affecting Sap Approuter →

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2026-101090 — Critical (CVSS 9.8): Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect endpoint. When the new optional…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…

Browse all CWE-601 (Open Redirect) vulnerabilities →