Quick answers
- Is CVE-2026-88403 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88403 being exploited in the wild.
- How severe is CVE-2026-88403?
- Medium severity, with a CVSS score of 6.5, published 21 September 2026.
- Which products and versions are affected?
- NocoDB 2.1.21.
- Is there a fix for CVE-2026-88403?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-88403 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-88403?
- Check whether you run NocoDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in the serverRequest function when the SERVER_REQUEST_WHITELIST environment variable is not configured (the default). The checkUrlAgainstWhitelist() function only logs a warning for requests to private IP addresses but does not block them, allowing authenticated attackers to send arbitrary HTTP requests to internal services via the customRequests:send API or similar features.
Affected products
- NocoDB NocoDB 2.1.21
Timeline
- 2026-09-07: disclosed
- 2026-09-21: advisory