PatchTheCEVCVE-2026-66761: SAP Approuter does not enforce sufficient flow control in certain functionality
23
Routine
MEDIUM 4.3UPGRADE
CVE-2026-66761 is a medium-severity flaw (CVSS 4.3) affecting approuter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with low privileges could send high volumes of data without consuming responses, causing unbounded memory growth. This results in a low impact on availability. There is no impact on confidentiality and integrity.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 69%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| 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.
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