PatchTheCEVCVE-2026-66760: SAP Approuter does not correctly validate client certificates in certain callback flows
24
Routine
MEDIUM 6.4UPGRADE
CVE-2026-66760 is a medium-severity flaw (CVSS 6.4) affecting approuter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low privileges, holding a certificate from the same trusted authority with matching subject values, could bypass the identity check. This complexity makes the attack difficult to execute. Successful exploitation could allow impersonation of a trusted internal component, resulting in a high impact on integrity and a low impact on confidentiali
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.4 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 93%) |
| CISA exploited list | No |
| Weakness | CWE-295 |
| Published | 2026-08-11 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated 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.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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