CVE-2026-66777
CVE-2026-66777 is a medium-severity vulnerability in Sap Approuter with a CVSS 3.x base score of 5.9. 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-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Sap Approuter
- Published:
- Last modified:
Description
SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to backend destinations. Due to the complexity of the required conditions, an attacker with low privileges could send specially crafted requests to bypass authorization checks and reach protected resources beyond their assigned scope. Successful exploitation could allow the attacker to read sensitive data and perform limited modifications on protected resources, resulting in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.
Frequently asked questions
- What is CVE-2026-66777?
- SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to backend destinations. Due to the complexity of the required conditions, an attacker with low privileges could send specially crafted requests to bypass authorization checks and reach protected resources beyond their assigned scope. Successful exploitation could allow the attacker to read sensitive data and perform limited modifications on protected resources, resulting in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.
- How severe is CVE-2026-66777?
- CVE-2026-66777 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2026-66777 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-66777?
- CVE-2026-66777 affects Sap Approuter. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-66777?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-66777 published?
- CVE-2026-66777 was published on 2026-08-11 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-2026-44745 — High (CVSS 8.1): SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain…
- 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-2026-66776 — 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 →
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