cvedb.io
CVE-2021-43557
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2021-11-22T09:15:07.627 · Last modified 2026-06-17T04:11:07.910

Summary

The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains "^/internal/", a URI like `//internal/` can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.

Affected products

apache — apisix

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.