cvedb.io
CVE-2026-40490
MEDIUM · CVSS 6.8
EPSS exploitation probability: 0%
Published 2026-04-18T02:16:11.977 · Last modified 2026-06-17T10:45:22.360

Summary

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. When redirect following is enabled (followRedirect(true)), versions of AsyncHttpClient prior to 3.0.9 and 2.14.5 forward Authorization and Proxy-Authorization headers along with Realm credentials to arbitrary redirect targets regardless of domain, scheme, or port changes. This leaks credentials on cross-domain redirects and HTTPS-to-HTTP downgrades. Additionally, even when stripAuthorizationOnRedirect is set to true, the Realm object containing plaintext credentials is still propagated to the redirect request, causing credential re-generation for Basic and Digest authentication schemes via NettyRequestFactory. An attacker who controls a redirect target (via

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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.